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- Corporate/Agency Authors:
- Forest Service and Agriculture Department
- Publisher:
- Forest Service
- Date:
- Feb. 1930 [reprint 1943]
- SuDoc number:
- A 1.30:167/1-2
- Corporate/Agency Authors:
- Soil Conservation Service
- Publisher:
- Soil Conservation Service
- Date:
- Jan. 1941
- SuDoc number:
- A 1.30:74