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- Plant Industry Bureau155
- Forest Service74
- Chemistry and Soils Bureau73
- Agricultural Economics Bureau63
- Animal Industry Bureau53
- Entomology Bureau49
- Entomology and Plant Quarantine Bureau26
- Agricultural Engineering Bureau23
- Information Office22
- Dairy Industry Bureau18
- Public Roads Bureau12
- Biological Survey Bureau11
- Home Economics Bureau8
- Soil Conservation Service7
- Cooperative Extension Work Office2
- Food and Drug Administration1
- Grain Futures Administration1