1930. 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 and United States. Agricultural Stabilization and Conservation Service.
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1930. Iowa. State Planning Board and Iowa State Conservation Commission. Biological Survey Unit. 20 leaves illustrations ; 29 cm. Iowa. State Planning Board.
1930. Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs... United States. Department of Agriculture and United States. Agricultural Stabilization and Conservation Service.
1930. Title supplied by cataloger based on information from sheet label. Image is a photoreduction of the mosaic created from original aerial photographs... United States. Department of Agriculture and United States. Agricultural Stabilization and Conservation Service.
1930. W.W. Hixson & Co. Extent: 1 map Notes: Page from: Plat book of Kent County, Michigan Scale approximately 1:51,000. published by W.W. Hixson & Company.
686. Yield of corn average yield of corn in bushels per acre, by region 1928-1932 state average 37.57
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 115 cm Negative. "Iowa state plan." "Project 1030." "1030-17.". Iowa. State Planning Board.