http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
23 pages : illustrations, charts ; 26 cm.
by Elizabeth Gates Zook, Marilyn J. MacArthur, and Edward W. Toepfer.
Includes bibliographical references (page 17).
Washington, D.C. : U.S. Dept. of Agriculture, 1956
Agriculture handbook (United States. Department of Agriculture) ; no. 97