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- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Feb. 1927, slightly revised June 1940.] [1940.]
- SuDoc number:
- A 1.9:1518/2
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [June 1928, revised May 1937, slightly revised May 1940.] [1940.]
- SuDoc number:
- A 1.9:1556/3
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Sept. 1939, reprint 1940.]
- SuDoc number:
- A 1.9:1813/1-2
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Dec.] 1939
- SuDoc number:
- A 1.9:1833
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Dec. 1939.]
- SuDoc number:
- A 1.9:1840
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Dec. 1939.]
- SuDoc number:
- A 1.9:1836
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [Sept. 1939.]
- SuDoc number:
- A 1.9:1813
- Corporate/Agency Authors:
- Soil Conservation Service
- Publisher:
- Soil Conservation Service
- Date:
- [Aug. 1939.]
- SuDoc number:
- A 1.9:1825
- Corporate/Agency Authors:
- Soil Conservation Service and Agriculture Department
- Publisher:
- Soil Conservation Service
- Date:
- [July 1939.]
- SuDoc number:
- A 1.9:1814
- Corporate/Agency Authors:
- Soil Conservation Service
- Publisher:
- Soil Conservation Service
- Date:
- [Feb. 1939.]
- SuDoc number:
- A 1.9:1812