1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base compiled in 1977; interpretations derived from soil map constructed 1974.; "Projection and 10,000-metre gri... Dept. of Agriculture, Soil Conservation Service (Washington.).
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1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated in 1976; interpretations derived from soil map constructed 1960.; "Projection and 10,000-metre gr... Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base compiled in 1973; interpretations derived from soil map constructed 1972.; "Projection and 10,000-metre gri... Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. Shows land use.; "October 1978."; Includes vicinity map.; "4-R-36896." 70 x 62 centimeters. The Service (Washington, D.C.?).
1978. United States. Soil Conservation Service. "Base map prepared by SCS, WTSC Carto Unit from AMS 1:250,000 series."; Sheet 1 has text on verso.; Includes location map. 64 x 81 centimeters; 89 ... Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.).
1978. United States. Soil Conservation Service. "Base map prepared by SCS, WTSC Carto Unit from AMS 1:250,000 series."; Sheet 1 has text on verso.; Includes location map. 62 x 65 centimeters; 36 ... Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.).
1978. United States. Soil Conservation Service. "Base map prepared by SCS, WTSC Carto Unit from AMS 1:250,000 series."; Text on verso.; Includes location map. 29 x 42 centimeters; 56 x 89 centime... Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base compiled in 1976; interpretations derived from soil map constructed 1972.; "Projection and 10,000-metre gri... Dept. of Agriculture, Soil Conservation Service (Washington.).
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.).
1978. United States. Soil Conservation Service. Universal Transverse Mercator projection; 1927 North American datum.; Feb. 1978.; Indexed. 92 x 112 centimeters Scale 1:50,00. Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. "Base compiled from Texas general highway map, polyconic projection."; "50,000 foot grid based on Texas coordinate system, central zone."; Jan. 197... The Service (Fort Worth, Tex.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1976; interpretations derived from soil map constructed 1975.; "Projection and 10,000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. Universal Transverse Mercator projection; 1927 North American datum.; Jan. 1978.; Indexed. 92 x 112 centimeters Scale 1:50,000. Dept. of Agriculture, Soil Conservation Service (Washington.).