Subject
Land titles Registration and transfer
261
National parks and reserves Law and legislation
167
Historic sites Law and legislation
126
Officials and employees
122
Selection and appointment
113
Public lands
91
Appropriations and expenditures
90
Energy policy
76
Hydroelectric power plants Law and legislation
57
Wild and scenic rivers Law and legislation
50
Hydroelectric power plants Licenses
47
Trails Law and legislation
40
Wilderness areas Law and legislation
38
Real property, Exchange of
33
Water resources development Law and legislation
33
Cultural property Protection Law and legislation
31
Energy conservation Law and legislation
28
Oil and gas leases
28
Forest reserves Law and legislation
27
Indian land transfers
24
Indians of North America Claims
22
Water resources development Finance Law and legislation
22
Conservation of natural resources Law and legislation
21
Management
21
National parks and reserves
21
Recreation areas Law and legislation
21
Historic sites
18
Water-supply
18
Historic preservation Law and legislation
17
United States Foreign relations
17
National monuments Law and legislation
16
Watershed management Law and legislation
16
Energy development
14
Energy development Law and legislation
14
Memorials Law and legislation
14
Petroleum products Prices
14
Natural areas Law and legislation
13
Petroleum industry and trade
13
Renewable energy sources Law and legislation
13
Homes and haunts
12
Monuments
12
Public lands Management
12
Radioactive waste disposal Law and legislation
12
Climatic changes
11
Forest reserves Management
11
Visitors' centers Law and legislation
11
War memorials Law and legislation
11
Dams Law and legislation
10
Electric power systems Law and legislation
10
Gasoline Prices
10
more ...