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- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- Sept. 1920
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- [Sept. 1920.]
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- [Sept. 1920.]
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- Sept. 1920
- Corporate/Agency Authors:
- Animal Industry Bureau and Agriculture Department
- Publisher:
- Animal Industry Bureau
- Date:
- [Sept. 1920.]
- Corporate/Agency Authors:
- Animal Industry Bureau and Agriculture Department
- Publisher:
- Animal Industry Bureau
- Date:
- [Sept. 1920.]
- Corporate/Agency Authors:
- Farm Management and Farm Economics Office and Agriculture Department
- Publisher:
- Farm Management and Farm Economics Office
- Date:
- [Sept. 1920.]
- Corporate/Agency Authors:
- Biological Survey Bureau and Agriculture Department
- Publisher:
- Biological Survey Bureau
- Date:
- [Aug. 1920, reprint Sept. 1920.]
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- [Oct. 1919, reprinted with slight changes Sept. 1920.]
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- [Dec. 1911, revised Nov. 1917, reprinted Sept. 1920.]