Human beings - Effect of environment on - History. - West (U.S.)

An unsettled country = changing landscapes of the American West / by: (Language materials, printed)

Human beings- Effect of environment on- West (U.S.)

Nature- Effect of human beings on- West (U.S.)

Hombre- Influencia sobre la naturaleza- EE. UU.

EE. UU.- Geograf毃a.- Oeste

EE. UU.- Historia.- Oeste

Hombre- Influencia del medio- EE. UU.

West (U.S.)- History.

Landscape- History.- West (U.S.)

West (U.S.)- Geography.