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- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- Feb. 1920
- Corporate/Agency Authors:
- States Relations Service and Agriculture Department
- Publisher:
- States Relations Service
- Date:
- Feb. 1920
- Corporate/Agency Authors:
- Entomology Bureau and Agriculture Department
- Publisher:
- Entomology Bureau
- Date:
- [Feb. 1920.]
- Corporate/Agency Authors:
- Animal Industry Bureau and Agriculture Department
- Publisher:
- Animal Industry Bureau
- Date:
- Feb. 1917, reprint Feb. 1920
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- Feb. 1920
- Corporate/Agency Authors:
- States Relations Service and Agriculture Department
- Publisher:
- States Relations Service
- Date:
- [Feb. 1920.]
- Corporate/Agency Authors:
- Plant Industry Bureau and Agriculture Department
- Publisher:
- Plant Industry Bureau
- Date:
- Mar. 1919, revised Feb. 1920. 1920
- Corporate/Agency Authors:
- Farm Management Office and Agriculture Department
- Publisher:
- Farm Management Office
- Date:
- Feb. 1920
- Corporate/Agency Authors:
- Entomology Bureau and Agriculture Department
- Publisher:
- Entomology Bureau
- Date:
- July, 1918, reprint Feb. 1920
- Corporate/Agency Authors:
- Entomology Bureau and Agriculture Department
- Publisher:
- Entomology Bureau
- Date:
- [Feb. 1920.]