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Subject
- Land trusts75
- Land use23
- Indians of North America16
- Nature conservation16
- Law and legislation14
- Conservation of natural resources13
- Conservation easements12
- Natural areas12
- Government policy11
- Land tenure9
- Planning8
- Finance7
- Indian allotments7
- Economic assistance, Domestic6
- Nonprofit organizations6
- Claims5
- Federally recognized Indian tribes5
- Indian land transfers5
- Economic aspects4
- Income tax deductions for charitable contributions4