California wildland conservation : unities and conflicts /

by Vaux, Henry J. (Henry James), 1912-
Published 1989

Forest management approaches on the public's lands : turmoil and transition /

by Thomas, Jack Ward
Published 1992

Pollutants in the air and acids in the rain : influences on our natural environment and a challenge for every industrial society /

by Cowling, Ellis B. (Ellis Brevier), 1932-
Published 1985

Tackling mass extinction of species : a great creative challenge /

by Myers, Norman
Published 1986