http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Vascular plant and vertebrate inventory of Montezuma Castle National Monument
Sonoran Desert Field Station (Tucson, Ariz.)
by Cecelia A. Schmidt, Charles A. Drost, and William L. Halvorson ; in cooperation with the University of Arizona, School of Natural Resources.
Title from title screen (viewed on Feb. 6, 2008).
"Sonoran Desert Network Inventory and Monitoring Program."
Mode of access: Internet from the USGS web site. Address as of 02/06/08: http://pubs.usgs.gov/of/2006/1163/of2006-1163.pdf ; current access available via PURL.
Includes bibliographical references (pages 21-22).
U.S. Geological Survey open-file report ; 2006-1163