Ecosystem management - United States.

Nature and the human spirit : = toward an expanded land management ethic / by: (Language materials, printed)

Nature and the human spirit : = toward an expanded land management ethic / by: (Language materials, printed)

A biological survey for the nation by: (Electronic resources)

Beyond naturalness : = rethinking park and wilderness stewardship in an era of rapid change / by: (Language materials, printed)

Protected land = disturbance, stress, and American ecosystem management / by: (Language materials, printed)

Biotic communities- United States.

Diversidad biol漃gica- Conservaci漃n- EE. UU.

Recursos naturales- EE. UU.

Nature conservation- United States.

Land use- Environmental aspects- United States.

Human ecology- United States.

Natural resources- United States.

Environmental policy- United States.

Environmental protection- United States.

Environment.

Protected areas- Management.- United States

Public lands- Management.- United States

Biological diversity conservation- United States.

Environmental law- United States.

Conservation of natural resources- United States.

Comunidades bi漃ticas- EE. UU.

Conservation Biology/Ecology.

Ecosystem management- United States.

Recursos naturales- Conservaci漃n- EE. UU.

Environmental Management.