2002. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2002 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
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2007. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2007 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
1985. United States. Soil Conservation Service. "February 1985 Base 4-R-39098."; Shows land use.; Includes vicinity map. 42 x 64 centimeters 1:100,000. USDA-SCS (Fort Worth, Tex.).
1980. United States. Soil Conservation Service. "Lambert conformal conic projection."; Source: SCS family of maps drawing 5,P-30,974 (revised 8-79).; "3-80. 5,S-37,760."; Includes vicinity map. 4... Dept. of Agriculture, Soil Conservation Service (Lincoln, Neb.).
1986. National Cartographic Center (U.S.). Shows land use.; "Interpretations derived from soil survey published in 1980."; "September 1985, 4-R-39374."; Includes vicinity map and text. 43 x ... USDA-SCS-National Cartographic Center (Ft. Worth, TX.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1975; interpretations derived from soil map constructed 1973.; "Projection and 10,000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).
1977. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1975; interpretations derived from soil map constructed 1976.; "Projection and 10 000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).
1977. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1975; interpretations derived from soil map constructed 1964.; "Projection and 10,000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).