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- Corporate/Agency Authors:
- Chemistry Bureau and Agriculture Department
- Publisher:
- Chemistry Bureau
- Date:
- Dec. 30, 1920
- Corporate/Agency Authors:
- Chemistry Bureau and Agriculture Department
- Publisher:
- Chemistry Bureau
- Date:
- Dec. 30, 1920
- Corporate/Agency Authors:
- Animal Industry Bureau and Agriculture Department
- Publisher:
- Animal Industry Bureau
- Date:
- Dec. 29, 1920
- Corporate/Agency Authors:
- Weather Bureau and Agriculture Department
- Publisher:
- Weather Bureau
- Date:
- [Dec. 28] 1920
- Corporate/Agency Authors:
- Agriculture Department
- Publisher:
- Agriculture Department
- Date:
- Dec. 28, 1920
- Corporate/Agency Authors:
- Agriculture Department
- Publisher:
- Agriculture Department
- Date:
- Dec. 28, 1920
- Corporate/Agency Authors:
- Agriculture Department
- Publisher:
- Agriculture Department
- Date:
- Dec. 27, 1920
- Corporate/Agency Authors:
- Porto Rico Agricultural Experiment Station, States Relations Service, and Agriculture Department
- Publisher:
- Porto Rico Agricultural Experiment Station
- Date:
- Dec. 27, 1920
- Corporate/Agency Authors:
- Biological Survey Bureau and Agriculture Department
- Publisher:
- Biological Survey Bureau
- Date:
- Dec. 23, 1920
- Corporate/Agency Authors:
- Entomology Bureau and Agriculture Department
- Publisher:
- Entomology Bureau
- Date:
- Dec. 21, 1920