1980. Struble, Richard A. Base map: USGS Cleveland, Ohio; Pa., U.S., Ont., Can. (4th ed. 1972 rev.) "Areal density of photo linears occurring within a 5000 meter square grid... Ohio. Division of Geological Survey.
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1980. Struble, Richard A. Base map: USGS Cleveland, Ohio; Pa., U.S., Ont., Can. (4th ed. 1972 rev.) "Areal density of photo linears occurring within a 5000 meter square grid... Ohio. Division of Geological Survey.
1980. Struble, Richard A. Base map: USGS Cleveland, Ohio; Pa., U.S., Ont., Can. (4th ed. 1972 rev.) "Areal density of photo linears occurring within a 5000 meter square grid... Ohio. Division of Geological Survey.
1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Agricultural Stabilization and Conservation Service.
1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Agricultural Stabilization and Conservation Service.
1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Agricultural Stabilization and Conservation Service.
1980. United States. Soil Conservation Service. "Interpretations derived from soil map constructed 1974."; May 1980.; Includes location map. 47 x 64 centimeters Scale 1:100,000. Dept. of Agriculture, Soil Conservation Service (Washington.).
1980. United States. Soil Conservation Service. "Interpretations derived from soil map constructed 1953."; May 1980.; Includes location map. 46 x 44 centimeters Scale 1:100,000. Dept. of Agriculture, Soil Conservation Service (Washington.).
1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Agricultural Stabilization and Conservation Service.
1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Agricultural Stabilization and Conservation Service.