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- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- Mar. 1939
- SuDoc number:
- A 57.21:15
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- Feb. 1939
- SuDoc number:
- A 57.21:14
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- Jan. 1939
- SuDoc number:
- A 57.21:13