1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 115 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
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1920. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 115 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 84 x 114 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Purchase & Mortgage. 1 map black line ; 71 x 110 cm Iowa state plan. "Project no. 1031.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 83 x 113 cm Negative. "Effective acreage = total farm land leass land in forest, waste, buildings, roads, and feed lots." "Iowa... Iowa. State Planning Board.
1930. Iowa. State Planning Board, Iowa Geological Survey, and Chariton Basin Planning Board (Iowa). [21] pages illustrations ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 115 cm Negative. "Iowa state plan." "Project 1030." "1030-10.". Iowa. State Planning Board.
1930. Iowa. State Planning Board. Committee on Business and Industry. 15 leaves illustrations ; 29 cm. Iowa. State Planning Board.
1930. Iowa. State Planning Board. 1 map on 4 sheets ; black line, plastic; on sheets 77 x 47 cm Some sheets oriented with north to the upper right. Iowa. State Planning Board.
1930. Iowa. State Planning Board. 1 map ; black line; 83 x 116 cm Negative. Iowa. State Planning Board.