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Subject
- Botany75
- Financial statements75
- Plants (Botany)73
- Federal receipts and expenditures65
- Museums60
- Museum acquisitions59
- Geology54
- Meteorology and weather forecasting54
- Smithsonian Institution54
- National Museum of Natural History52
- Discovery and exploration47
- Agricultural research45
- Astronomy45
- Birds45
- Smithsonian Institution. Board of Regents44
- United States. Department of Agriculture44
- Agricultural pests43
- Federal aid to museums42
- Insects42
- Smithsonian Institution. Bureau of American Ethnology42