A short abstract of less than 200 words should precede the main text. The abstract should identify the problem addressed in the paper, indicate the methodology, and summarize the results. Authors should prepare an abstract that will be interesting to and understood by nonspecialists in the field. Five to eight key words should accompany the abstract. Illustrations. All illustrations including maps should be referenced parenthetically by arabic numbers in the text. For example, "Rainfall increases with elevation (Fig. 1)." Captions for figures should be sent as a separate file and not included or embedded into the figure itself. All illustrations should be sized for 1-column width (3.25") or 2-column width (6.625"), be no more than 9.0" in height, and be sent as separate files as "grayscale" tiff or eps graphic files at 350 dpi, and "line" illustrations should be 1200 dpi. PLEASE DO NOT embed graphic files into your article or send your figures as PowerPoint® graphics or Word docs. Send illustrations/figures as separate files on a CD-R. Maps. A bar scale in kilometers and a north arrow should be included on all maps. Enlarged details of maps should be to scale. All geographic places mentioned in the text should be shown on a map. Measurements. All measurements should be given in SI units (expanded metric system). Tables. Tables should be presented on separate sheets apart from the text and printed as quality images. They should be formatted to fit the standard text area of the journal [1-column width (3.25") or 2-column width (6.625") and no more than 9.0" in height], since they may be treated as camera-ready illustrations at the time of publication. Send tables as separate files with text file on CD-R. Reference Style. Great Plains Research uses The Chicago Manual of Style, 15th edition, as its reference guide. The journal uses author-date citations in the text [for example, in chronological order: (Smith et al. 1990; Templer 1992; Jones in press)) and a complete reference section that gives author, year, title, source, and page references for journal or newspaper articles. Include page numbers for quotations [for example: (Templer 1992: 45)). • For a journal article: Murkin, H.R. 1998. Freshwater functions and values of prairie wetlands. Great Plains Research 8: 3-15. • For a book: Blouet, B.W., and F.e. Luebke, eds. 1979. The Great Plains: Environment and Culture. University of Nebraska Press, Lincoln. • For an article in a book or conference volume: Wedel, W.R. 1994. Coronado and Quivira. In Spain and the Plains, ed. R.H. Vigil, F.w. Kaye, and J.R. Wunder, 45-66. University Press of Colorado, Niwot. • For a government document: U.s. Department of Agriculture, Soil Conservation Service (USDA-SCS). 1977. Soil Survey of Arthur and Grant Counties, Nebraska. U.S. Government Printing Office, Washington, De. For complete guidelines, please see our web page: www.unl.edu/plains