NALDC

Main content area

MLA

May, George, and United States Department of Agriculture. Economics and Statistics Service. Statistical Research Division. Evolution of land cover definitions and survey for the Economics and Statistics Service. USDA, ESS, Statistics Research Division, 1981.

APA

May, George, and United States Department of Agriculture. Economics and Statistics Service. Statistical Research Division. (1981). Evolution of land cover definitions and survey for the Economics and Statistics Service. USDA, ESS, Statistics Research Division.

Chicago

May, George., and United States Department of Agriculture. Economics and Statistics Service. Statistical Research Division. Evolution of land cover definitions and survey for the Economics and Statistics Service. USDA, ESS, Statistics Research Division, 1981.