http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
origin, classification, characteristics, and descriptions of representative clones
1 online resource (307 pages) : illustrations, map.
Title from title screen (viewed on Feb. 27, 2012).
Includes bibliographical references (pages 260-262).
Agriculture handbook (United States. Department of Agriculture) ; no. 122