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- Agricultural Chemistry and Engineering Bureau17
- Agricultural Economics Bureau4
- Agricultural Engineering Bureau2
- Agricultural Marketing Administration1
- Agricultural Marketing Service1
- Agricultural Research Administration6
- Agricultural and Industrial Chemistry Bureau3
- Agriculture Department1,276
- Animal Industry Bureau139
- Biological Survey Bureau5
- Chemistry Bureau10
- Chemistry and Soils Bureau49
- Dairy Industry Bureau26
- Dairying Bureau5
- Entomolgy Bureau1
- Entomology Bureau115
- Entomology and Plant Quarantine Bureau82
- Entomotogy and Plant Quarantine Bureau1
- Experiment Stations Office1
- Federal Horticultural Board1