1930. Iowa. State Planning Board. Committee on Forests & Wasteland. 1 map black line ; 83 x 114 cm Iowa state plan. "Project 1033." "1033-1.". Iowa. State Planning Board.
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1930. Iowa. State Planning Board. 1 volume (no pagination) illustrations ; 28 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. Iowa. State Planning Board. Biological Survey. 1 map black line ; 84 x 114 cm Iowa state plan. "Project 1035.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Surveys, Maps, & Plans. 1 map ; black line; 84 x 115 cm Iowa state plan.; "Project 1050."; "1050-2.". Iowa. State Planning Board.
1930. Tester, Allen C. (Allen Crawford), 1897-. 1 color map Scale 1:500,000. W 96°37′--W 90°07′/N 43°30′--N 40°07′. Iowa Geological Survey.
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. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 71 x 110 cm Iowa state plan. "Project 1030." "1030-11.". 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.