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Creator
- Iowa. State Planning Board27
- Iowa. State Planning Board. Committee on Land Utilization18
- Iowa. State Planning Board. Water Resources Committee7
- Iowa. State Planning Board. Committee on Land Purchase & Mortgage6
- Iowa. State Planning Board. Committee on Population Social Trends6
- Iowa. State Planning Board. Committee on Population and Social Trends5
- Iowa. State Planning Board. Committee on Population & Social Trends4
- Iowa. State Planning Board. Committee on Transportation4
- Iowa. State Planning Board. Committee on Water Flow & Supply & Stream Pollution4
- Iowa. State Planning Board. Recreation & Historic Division3
- Bowen, Howard R. (Howard Rothmann), 1908-19892
- Iowa. State Planning Board. Business Research Committee2
- Iowa. State Planning Board. Committee on Business and Industry2
- Iowa. State Planning Board. Committee on Forests & Wasteland2
- Iowa. State Planning Board. Committee on Rural, Secondary, & Adult Education Survey2
- Iowa. State Planning Board. Transportation Committee2
- Bowman, Alfred B.1
- Brown, C. H.1
- Chariton Basin Planning Board (Iowa)1
- Griffith, W. I.1