Guide defines Prime Farmland, Unique Farmland, Additional Farmland of Statewide Importance, Additional Farmland of Local Importance and lists the soil mapping units for Prime Farmland and Additional Farmland of Statewide Importance., Shows "prime farmland," "additional farmland of statewide importance", and "other land."; "Interpretations derived from soil map constructed 1963-1969 by Cartographic Division, Soil Conservation Service, USDA, of Clarion County, Pennsylvania."; "Compiled from 1:24 000-scale topographic maps dated 1963-1969."; "Planimetry revised from aerial photographs taken 1973-1977."; "Projection and 10 000-meter grid ticks, zone 17 Universal Transverse Mercator. 25 000-foot grid ticks based on Pennsylvania coordinate system, north zone."; "August 1980."; Includes location map., 1 map :color ;108 x 86 cm + guide (6 unnumbered pages ; 28 cm), Scale 1:50,000
United States. Soil Conservation Service (n.d.). Important farmlands, Clarion County, Pennsylvania. United States. Soil Conservation Service. http://cdm17287.contentdm.oclc.org/cdm/ref/collection/maps1/id/33716 (map)