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1. Acreage in pasture percent of effective acreage in pasture 1932

Maps University Of Iowa Public content
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.

4. Characteristics of farming areas Iowa

Maps University Of Iowa Public content
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map ; black line; 84 x 116 cm Iowa state plan.; "Project no. 1030.". Iowa. State Planning Board.

7. Feed unit per farm production per farm by townships

Maps University Of Iowa Public content
1930. Iowa. State Planning Board. Committee on Land Utilization. 1 map black line ; 84 x 115 cm Negative. "Project 1030." "1030-8.". Iowa. State Planning Board.