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- Department of Agriculture[remove]954
- Experiment Stations Office167
- Weather Bureau150
- Animal Industry Bureau57
- Agrostology Division52
- Publications Division46
- Entomology Division43
- Botany Division42
- Statistics Division32
- Soils Division30
- Dairy Division23
- Vegetable Physiology and Pathology Division22
- Biological Survey Division21
- Office of Experiment Stations21
- Division of Statistics20
- Chemistry Division19
- Foreign Markets Section17
- Seed and Plant Introduction Section15
- Forestry Division14
- Office of Road Inquiry13