Bolívar, conservacionista /

by Bolinaga de Dúo, María Begoña, Bolinaga de Dúo, María Begoña
Published 1982

Theodore Roosevelt, the making of a conservationist /

by Cutright, Paul Russell, 1897-, Cutright, Paul Russell, 1897-, Cutright, Paul Russell, 1897-1988
Published 1985

Chayŏn poho saŏp ŭl kanghwa halte taehayŏ /

by Kim, Il-sŏng, 1912-, Kim, Il-sŏng, 1912-1994, Kim, Il-sŏng, 1912-1994
Published 1993

The American wilderness /

by Adams, Ansel, 1902-1984, Adams, Ansel, 1902-1984
Published 1990