Base source: USGS 1:100,000 county base map compiled in 1977 from USGS 1:24,000 topographic maps dated 1970-1973; interpretations derived from soil map constructed 1971.; "Projection and 10,000-metre grid ticks, zone 18: Universal Transverse Mercator ... 25,000 foot grid ticks based on Virginia [sic] coordinate system."; May 1979.; Includes vicinity map. 51 x 66 centimeters Scale 1:100,000; 1 cm. = 1 kilometer
Creator:
United States. Soil Conservation Service
Publisher:
Dept. of Agriculture, Soil Conservation Service (Washington.)
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