No one could have been more interested in the history of medicine than Leslie Thomas Morton, whose career we celebrate in this issue. This necessarily encompasses the history of medical libraries —on which the historical record so heavily depends—and the biographies of the librarians who directed them. In the English-speaking world, our profession has done a creditable if not excellent job at chronicling the genesis and growth of medical libraries—with details of their buildings, their collections, and their services. Their people, too, have not been overlooked. Although, as a rule, library personnel are mentioned only in passing. Typically, the most complete biographies of medical librarians appear as their obituaries, although background material on practising librarians may certainly be found elsewhere. These sources include appointment or retirement notices; background and position statements when one is a candidate for election; citations or introductions when an award is presented or an honour conferred. Other biographical information, of the potted variety, can be found in such works as ‘Biographical directory of librarians’1 and ‘Who's who in library and information services’,2 provided the librarian has contributed to them. Sometimes a librarian might make it into a selective directory such as ‘Who's who’3 or ‘Who's who in America’,4 although inclusion in these depends both on data having been submitted and on having being selected. The author found only two medical librarians who have entire books devoted to their careers,5,6 while another book is an autobiography with biographical comments on her contemporaries.7 Several librarians have been featured as a group, in articles that detail their lives and careers.8−12 The quality and coverage of the examples cited, and of other works, vary—from the profound to the pedestrian, from the serious to the superficial. However, in the main, all lack the personal reflections and reminiscences of those whose lives and careers are chronicled. Addressing this matter, the Medical Library Association (MLA) embarked in 1977 on an oral history project, whereby major library administrators, MLA officers, and certain others in the field, in North America and elsewhere, were invited to record their thoughts and recollections on audio tape. In general, such invitations were extended to persons who had retired or who were about to do so. Rather than have them spout into thin air, and to give the project some structure and consistency, a set of questions was devised that would be posed by a qualified interviewer. Naturally, these varied from person to person, and the one being interviewed was shown the questions in advance and could decline to answer any one of them—or suggest additions or changes. The audio tapes were later transcribed and the transcriptions made generally available—through copies deposited at MLA headquarters in Chicago; in the History of Medicine Division at the US National Library of Medicine (which is also MLA's archive and the repository of the audio tapes); in the eight regional libraries of the National Network of Medical Libraries; selectively, in other libraries (generally, those having an association with the person interviewed or with the interviewer). McKenzie and Pifalo relate the project, from its inception until 1998 (MLA's centennial year), in a series of articles appearing that year.13−15 A comprehensive background history begins the series, while the succeeding pages contain extensive abstracts of transcripts of the reminiscences of the 43 persons interviewed (the first, Janet Doe, in July 1977, and the last, Tom Fleming, in November 1990). Looking over the list of librarians, one would immediately note that most are ‘household names’ in the health-sciences library community (in America certainly), and several are librarians of international repute (Scott Adams, Martin Cummings, Frederick Kilgour, Nina Matheson, and Brad Rogers, among them). Many have since died, and it is gratifying that their voices were captured on tape, and their memoirs transcribed, before it was too late. The most enthusiastic interviewer was Estelle Brodman, with 14 interviews to her credit. She herself was interviewed, twice, over a 3-year period, by Kay Berteau and by Nancy Whitten Zinn. Zinn interviewed another five persons, and Carol Fenichel (now Montgomery) interviewed four. Brodman, almost anticipating the conclusions of this article, wrote a piece about the project in 198116 and furnishes some information that is not present in McKenzie and Pifalo. By November 2002, another 24 interviewees had been added to the roster, although editing and transcription of their remarks is in various stages of development—from first draft to all but completed. At the time of writing, 67 names appear on the MLA website, and doubtless a few more will have been added by the time this appears in print. Leslie Morton (an honorary member of MLA) is on that roster. At MLA's annual meeting in 1999 he was identified by the Oral History Committee, along with several other long-retired librarians, as one who should be interviewed while the opportunity still existed. The author volunteered to do so and, while he had not previously interviewed a participant in the programme, he had himself been interviewed the previous year. Ever gracious, Leslie agreed to the interview, and it was held at his home in August 1999, using questions that were mutually agreed on. Had time permitted, the author would have listened to all the available tapes or read the transcripts in their entirety. In setting down his thoughts, he has relied heavily on the abstracts so ably compiled by McKenzie and Pifalo and has dipped into some transcripts. From these, he learns that the longest interview was with Louise Darling (University of California, Los Angeles) whose transcript runs to 118 leaves; the shortest, with Janet Doe (New York Academy of Medicine), nine. One librarian, a great believer in ‘telling all’, did just that, complaining that medical librarians were not willing to speak their minds. (On request, a portion of the interview was sealed for 20 years—until 1998—perhaps not long enough, because, when the time came, two of the subjects of that segment were still very much alive, as was the spouse of the third.) Other librarians, too, tell all, but mainly about themselves and of the background and circumstances that got them where they are today. In doing so, they frequently laud and thank a special person or a certain group that helped and inspired them to reach their goals and arrive at the level they have attained. Some are their superiors; many, teachers; and others, colleagues and confreres. Nearly all speak to their reverence for professional associations and exhort active participation in them, reserving their greatest affection for MLA. Most marvel at the tremendous strides that have been made in their lifetimes and of the technological advances in the span of their careers. Many trot out mantras and maxims; mottoes and mores. Reverence too is expressed throughout—for education and learning, for the printed word in all its formats, for the wide dissemination of knowledge and the timely provision of information, for the well-being of the individual and of the community, for the value of service, for probity and integrity. Many convey the enthusiasm they feel for their chosen profession and for the excitement it affords. In light of developments since the time of their interviews, a goodly number show great foresight. Few tell of serious feuds and conflicts or reveal facts or actions hitherto totally unknown (with the exception, of course, of certain purely personal aspects of their lives). Many tell of the aggravations and frustrations that they have experienced along the way. While several are critical of individuals and institutions, none display any deep-down hostility or dislike. And only one expresses a really negative view of colleagues. Those who have been interviewed are not listed in this essay, and checking the lists to see whether a librarian is included on the roster, and then requesting a transcript, can quickly satisfy any interest in a single individual. Looking over the list one will note, with some dismay, that several librarians of distinction, who were alive in 1977 and later, but have since died, were never interviewed. This may be as a result of his or her never having been approached. Or it could be that, when approached, he or she, for whatever reason, declined to be interviewed. (This is not unknown, and continues to be the case with living librarians.) Of interest are the characteristics and types of librarians who have been interviewed. Using the most up-to-date list available, containing 68 names, one finds 57% are female and 43% are male. The latter percentage will doubtless decline in the years ahead as the number of women, who already make up much more of the profession than men, advance to higher places in greater numbers. Fifty-three, or 78%, of all librarians interviewed are either fellows or honorary members of MLA, and 46, or 68%, of them qualified for inclusion in the MLA Centenary List of ‘The 105 Most Memorable—1898–1998.’ This required the honoree to have either served as MLA president or; received its highest honour—The Marcia C. Noyes Award (established in 1947); or been selected to deliver the Janet Doe Lecture (established in 1966). There is considerable overlap among the various categories, with some individuals enjoying a place in all three of them. Leslie, by the way, makes it into one of these—the Marcia C. Noyes Award (1960)—and, as already noted, he was elected an Honorary Member in 1994. University medical library directors make up the largest category in the list—42, or 62%. The National Library of Medicine has the largest number of its staff interviewed—six in all, two of them directors. Other types of libraries represented by those interviewed include hospital—4; society or association—5; pharmaceutical—2; veterinary—1. Two former MLA executives have been interviewed, but only one library school instructor. So much for the librarians, the libraries they represent, and the interviews they gave. What of the utility, the potential use, and the actual use, of the tapes and transcripts? Brodman in her article16 provides many of the answers. Based on the interviews then available, and the involvement of the persons who granted them, she suggests these topics that would lend themselves to further exploration: development of the ‘Handbook of medical library practice’; role of the National Library of Medicine—past and present; impact of Word War II on the supply of foreign medical journals; establishment of a central office for MLA; the certification of medical librarians; development and implementation of automation in medical libraries. As earlier stated, each interview is transcribed, with much care devoted to accuracy, completeness and explicitness. The author can testify to this by the number of inquiries he received from the transcriber of the Morton tape. He wanted to verify spelling and to know more about allusions to this person or that event. While the recording is transcribed exactly as heard, if a statement is made that is patently incorrect or likely to be not generally understood, a footnote correcting it, or expounding on it, is added. Following this exercise, copies of the transcripts are distributed. Their general availability is publicized periodically, and all are fully catalogued so that every conceivable approach through conventional or electronic means will guarantee a hit. As far back as 1981, Brodman bemoaned the fact that ‘so far only one use has been made of the tapes’ but goes on to hope that ‘now that the tape collection is better known, more active use of the information contained in it will result.’16 Sadly, little has changed; the use made of the tapes seems to be minimal, based on a recent survey of the depository libraries. (Despite the simplicity of the survey some of them did not even answer.) But as one respondent kindly said: it's their very existence that's important. They are there for all to see and hear when the time comes or the need arises. Quoting Brodman again: ‘the history of ideas in librarianship is no less worthy of study than the history of ideas in (other fields), and it is hoped that many medical librarians will avail themselves of the opportunities presented by MLA's Oral History Project.’16 If nothing else, the tapes are an assurance to the obituaries editor of the Journal of the Medical Library Association that a fairly comprehensive biography is on file for all those still-living librarians on whom his sights are set! Lastly these are oral histories. Provided the audio tapes remain audible—alternatively, are reformatted and adapted to the latest technology—posterity will know how the librarians of yore sounded and spoke. One can hear the gruff tones of Brad Rogers, the quintessential southern belle in Mildred Langner, the New Yorker in Estelle Brodman, the German origins of Erika Love and Ursula Poland —and, above all, the Londoner in Leslie. The author is aware of a comparable, if not as extensive, programme in the UK, including the work of Valerie Ferguson in this area, with whom he has been in correspondence, and of others whose work has been brought to this attention. He hopes that his paper might inspire greater interest in programmes of this kind.

Health Libraries ReviewVolume 14, Issue 1 p. 43-46 Free Access The information frontier: report on the 96th Annual Meeting of the MedicalLibrary Association (MLA), Kansas City, Missouri, 1–5 June 1996 T. Hodges, T. Hodges Director (retired) The Annette and Irwin Eskind Biomedical Library, Annette and Irwin EskindBiomedical Library, Vanderbilt University, Nashville, Tennessee, Vanderbilt University, Nashville,Tennessee, USA USASearch for more papers by this author T. Hodges, T. Hodges Director (retired) The Annette and Irwin Eskind Biomedical Library, Annette and Irwin EskindBiomedical Library, Vanderbilt University, Nashville, Tennessee, Vanderbilt University, Nashville,Tennessee, USA USASearch for more papers by this author First published: 28 June 2008 https://doi.org/10.1046/j.1365-2532.1997.05858.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume14, Issue11997-06-12Pages 43-46 RelatedInformation

Health Libraries ReviewVolume 14, Issue 4 p. 252-255 Free Access Sleepless in Seattle: report on the 97th Annual Meeting of the Medical Library Association (MLA), Seattle, Washington, 24–28 May 1997 T. MARK HODGES, T. MARK HODGES Vanderbilt University Medical Center, Nashville, Tennessee, USASearch for more papers by this author T. MARK HODGES, T. MARK HODGES Vanderbilt University Medical Center, Nashville, Tennessee, USASearch for more papers by this author First published: 28 June 2008 https://doi.org/10.1046/j.1365-2532.1997.14402521.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume14, Issue4December 1997Pages 252-255 RelatedInformation

Health Libraries ReviewVolume 13, Issue 1 p. 55-58 Free Access Health Information for the Global Village. 95th Annual Meeting of the Medical Library Association (MLA) and 7th International Congress on Medical Librarianship (ICML), Washington, DC, USA, 7–12 May 1995 T. Mark Hodges, T. Mark Hodges The Annette and Irwin Eskind Biomedical Library, Vanderbilt University, Nashville, Tennessee, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges The Annette and Irwin Eskind Biomedical Library, Vanderbilt University, Nashville, Tennessee, USASearch for more papers by this author First published: March 1996 https://doi.org/10.1046/j.1365-2532.1996.13100551.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume13, Issue1March 1996Pages 55-58 RelatedInformation

Health Libraries ReviewVolume 11, Issue 4 p. 286-289 Free Access Medical Library Association (MLA) in San Antonio, Texas, 13–18 May 1994 T. Mark Hodges, The Annette and Irwin Eskind Biomedical Library, Vanderbilt University Nashville, Tennessee, USASearch for more papers by this author T. Mark Hodges, The Annette and Irwin Eskind Biomedical Library, Vanderbilt University Nashville, Tennessee, USASearch for more papers by this author First published: December 1994 https://doi.org/10.1046/j.1365-2532.1994.11402861.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat Volume11, Issue4December 1994Pages 286-289 RelatedInformation

Health Libraries ReviewVolume 10, Issue 4 p. 233-236 Free Access Meeting Reports MEDICAL LIBRARY ASSOCIATION (MLA). Report on the 93rd Annual Meeting, 16-19 May 1993, Chicago, Illinois, USA. T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee, USASearch for more papers by this author First published: December 1993 https://doi.org/10.1046/j.1365-2532.1993.10402331.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume10, Issue4December 1993Pages 233-236 RelatedInformation

Health Libraries ReviewVolume 8, Issue 3 p. 159-162 Free Access MLA by the Bay. Report on the 91st Annual Meeting of the Medical Library Association, San Francisco, California, 31 May–6 June 1991. T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, USASearch for more papers by this author First published: September 1991 https://doi.org/10.1046/j.1365-2532.1991.8301582.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume8, Issue3September 1991Pages 159-162 RelatedInformation

Health Libraries ReviewVolume 8, Issue 3 p. 188-189 Free Access Irwin Howard Pizer T. Mark Hodges, T. Mark Hodges Vanderbilt Medical Center Library Nashville, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Vanderbilt Medical Center Library Nashville, USASearch for more papers by this author First published: September 1991 https://doi.org/10.1046/j.1365-2532.1991.8301881.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume8, Issue3September 1991Pages 188-189 RelatedInformation

Health Libraries ReviewVolume 7, Issue 4 p. 221-223 Free Access Memo from Motown; MLA in Michigan. The 90th Annual Meeting of the Medical Library Association, 18–24 May 1990, Detroit. T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, USASearch for more papers by this author First published: December 1990 https://doi.org/10.1046/j.1365-2532.1990.7402165.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume7, Issue4December 1990Pages 221-223 RelatedInformation

Health Libraries ReviewVolume 6, Issue 1 p. 34-37 Free Access When the Saints Go Marching In: MLA in New Orleans, 22–25 May 1988, New Orleans, Louisiana T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, USASearch for more papers by this author First published: March 1989 https://doi.org/10.1046/j.1365-2532.1989.6100341.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume6, Issue1March 1989Pages 34-37 RelatedInformation

Health Libraries ReviewVolume 6, Issue 4 p. 221-223 Free Access Boston tea party: MLA in Massachusetts. 89th Annual Meeting of the Medical Library Association, 19–25 May 1989, Boston, Massachusetts T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232-2340 USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232-2340 USASearch for more papers by this author First published: December 1989 https://doi.org/10.1046/j.1365-2532.1989.6402211.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume6, Issue4December 1989Pages 221-223 RelatedInformation

Health Libraries ReviewVolume 4, Issue 4 p. 247-250 Free Access Shaping the Future: MLA in Portland, 15–21 May 1987, Portland, Oregon T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, USASearch for more papers by this author First published: December 1987 https://doi.org/10.1046/j.1365-2532.1987.4402443.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume4, Issue4December 1987Pages 247-250 RelatedInformation

Health Libraries ReviewVolume 3, Issue 4 p. 225-228 Free Access MLA in Minneapolis T. Mark Hodges, T. Mark Hodges Director, Vanderbilt Medical Center Library, Nashville, Tennessee, 37232 USASearch for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Vanderbilt Medical Center Library, Nashville, Tennessee, 37232 USASearch for more papers by this author First published: December 1986 https://doi.org/10.1046/j.1365-2532.1986.3402224.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume3, Issue4December 1986Pages 225-228 RelatedInformation

Health Libraries ReviewVolume 2, Issue 4 p. 199-203 Free Access Big bytes in the Big Apple, New York T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, U.S.A.Search for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee 37232, U.S.A.Search for more papers by this author First published: December 1985 https://doi.org/10.1046/j.1365-2532.1985.2401934.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume2, Issue4December 1985Pages 199-203 RelatedInformation

Health Libraries ReviewVolume 1, Issue 4 p. 217-220 Free Access MLA: One Mile Higher in '84 T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee, U.S.A.Search for more papers by this author T. Mark Hodges, T. Mark Hodges Director, Medical Center Library, Vanderbilt University, Nashville, Tennessee, U.S.A.Search for more papers by this author First published: December 1984 https://doi.org/10.1046/j.1365-2532.1984.1402171.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume1, Issue4December 1984Pages 217-220 RelatedInformation