2000. University of Iowa. 13 × 24 cm. University of Iowa.
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2000. University of Iowa. 14 × 26 cm. University of Iowa.
1990. University of Iowa. 17 × 21 cm. University of Iowa.
1990. University of Iowa. 17 × 21 cm. University of Iowa.
1990. University of Iowa. 17 × 24 cm. University of Iowa.
1990. University of Iowa. 14 × 25 cm. University of Iowa.
1990. University of Iowa. 14 × 25 cm. University of Iowa.
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.