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Subject
- Boundaries[remove]47
- Counties28
- Administrative and political divisions13
- Society5
- Environment4
- States4
- Protected areas3
- Wilderness areas3
- Biology and Ecology2
- Boundary disputes2
- Conservation easements2
- Countries2
- Inland Waters2
- Open spaces2
- Planning and Cadastral2
- Public lands--Fees2
- Wilderness area monitoring2
- Battlefields1
- Elementary schools1
- Farming1