http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Obtaining timely crop area estimates using ground-gathered and LANDSAT data
Economics, Statistics, and Cooperatives Service.
iii, 29 pages : illustrations, map ; 26 cm.
Technical bulletin (United States. Department of Agriculture) ; no. 1609