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Subject
- Biology and Ecology[remove]25
- Environment25
- Biogeography19
- Habitat (Ecology)12
- Home range (Animal geography)11
- Boundaries6
- Ecological zones6
- Inland Waters6
- Watersheds6
- Rodents5
- Conservation of natural resources4
- Forests and forestry4
- Rivers4
- Timber4
- Waterways4
- Agriculture3
- Biotic communities3
- Endangered species3
- Hydrography3
- Land use, Rural3