Management 35 Public lands 35 Land use 24 Conservation of natural resources 16 Environmental aspects 14 Planning 14 Watershed management 12 Wildlife conservation 12 Antiquities 10 Wildlife management 10 Ecosystem management 9 Indians of North America 9 Indigenous peoples 9 Natural resources 9 Recreation areas 9 Recreational use 7 Wilderness areas 7 History 6 Conservation 5 Control 5 Fishery management 5 Forest management 5 Government policy 5 Habitat 5 National parks and reserves 5 Outdoor recreation 5 Protection 5 Range management 5 Analysis 4 Collection and preservation 4