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Subjects
- Animals, Wild -- classification1
- Anura1
- Delivery, Obstetric -- methods1
- Fishes1
- Fresh Water -- analysis1
- Geological Phenomena1
- Indians, North American1
- Malaria -- etiology1
- Mammals -- classification1
- Middle East1
- Mollusca1
- Northwestern United States1
- Population Density1
- Reptiles1
- Southeastern United States1
- Southwestern United States[remove]9
- Sparrows1
- Topography, Medical1