1980. Title supplied by cataloger based on information from sheet labels. Images are photoreductions of mosaics created from original aerial photographs.... United States. Department of Agriculture.
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1980. United States. Soil Conservation Service. Shows land use.; Includes vicinity map.; "October 1979 base 4-R-37164." 57 x 77 centimeters. USDA-SCS (Fort Worth, Tex.).
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 1978."; May 1980.; Includes location map. 45 x 50 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. University of Iowa. 20 × 17 cm. University of Iowa.
1980. University of Iowa. 17 × 21 cm. University of Iowa.
1980. University of Iowa. 17 × 21 cm. University of Iowa.
1980. University of Iowa. 17 × 21 cm. University of Iowa.
1980. University of Iowa. 17 × 21 cm. University of Iowa.