http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
environmental gradients, boundaries, and buffers
298 pages : illustrations, maps ; 25 cm.
edited by George Mulamoottil, Barry G. Warner, Edward A. McBean.
Proceedings of an international symposium, April 22-23, 1994.
Includes bibliographical references and index.