In September of 1979, an international study team of experts in international law and geology met for the first time, under the auspices of the School of Law and the Natural Resources Center of the University of New Mexico, as well as the Institute of Legal Research of the National Autonomous University of Mexico. The purpose of this gathering was to put together a research project on the international law applicable to the utilization and conservation, between neighboring coastal States, of submarine transboundary hydrocarbon resources. This article describes the draft treaty arising from that and subsequent meetings.

Law and International Resource Conflicts. By J. E. S. Fawcett and Audrey Parry. New York: The Clarendon Press; Oxford University Press, 1981. Pp. xiv, 254. Index. $55. - International Regulation of Internal Resources. By Mahnoush H. Arsanjani. Charlottesville: University Press of Virginia, 1981. Pp. 558. Index. $37.50. - Volume 76 Issue 3

A solar zoning ordinance for protecting the access to sunlight for solar energy systems is proposed. The model ordinance, which incorporates passive solar energy systems, requires that the solar collector have a capacity of at least 25,000 Btu on a clear winter solstice day. The model utilizes the concept, drawn from water law, of beneficial use but does not grant absolute rights. Structures or vegetation on properties adjoining those with solar energy installations cannot cast a shadow greater than one cast by a hypothetical wall which complies with local height restrictions. Thus, compliance can be determined by actual measurements. Existing structures or vegetation which cast shade at the time of the implementation of the ordinance would become nonconforming uses and variances would be issued where compliance with ordinance provisions would cause unnecessary hardship. A position of City Forester would be created to control vegetation restrictions. Exceptions to the ordinance are permitted where solar collectors may be impractical. The proposed ordinance also permits the transfer of solar access rights. Technical data on shadow lengths and insolation are included in an appendix.

This book focuses on the questions of how best to manage water resources in the face of growing demand. It explores various water management problems encountered by developing countries, with an emphasis on institutional and human factors that affect economic growth.

La Contaminación de los Ríos en el Derecho Internacional Público. By Vincente Guillermo Arnaud. (Buenos Aires: Instituto Nacional de Ciencia y Técnica Hídricas, Centro de Tecnología del Agua, 1974. Pp. 362.) - Volume 72 Issue 4

Restless River: International Law and the Behavior of the Rio Grande. By Jerry E. Mueller El Paso: Texas Western Press, 1975. Pp. xiii. Index. 5.00, paper. - La Frontera Norte de Mexico: Historia, Conflictos. By Cesar Sepúlveda. Mexico: Editorial Porrua, S.A., 1976. Pp. 168. - Volume 71 Issue 4