Parques nacionales del Peru
1968
Vilchez Murga, Salomon |
Vilchez Murga, Salomón |
Conservation administrations
Glimpses of our national parks
1941
Story, Isabelle F. |
Parques nacionales y otras areas protegidas en Bolivia
1980
Rios Rodriguez, Manuel A. |
Analisis legal de la administracion y manejo del parque nacional Huascaran
1990
Ferrando G., Enrique |
Hidalgo F., Jessica |
Objective secured
1971
Moir, W. W. G. |
Colombia's national parks : an analysis of management problems and perceived values
1975
Meganck, Richard Albert |
Proclamations and orders relating to the national park service up to January 1, 1945
1947
Sullivan, Thomas Alan |
Laws relating to the National Park Service, the national parks and monuments
Tolson, Hillory A. |
Sullivan, Thomas Alan |