National parks of New Zealand
1974
Pascoe, John |
Ecosystem surveys
Informe sobre la situacion actual del parque nacional Cutervo (Cajamarca)
1974
Brack Egg, Antonio |
Vilchez Murga, Salomon |
Vilchez Murga, Salomón |
Parque regional Piedras Blancas-Las Palmas : bases de planeacion
1970
Hill, Michael G. A. |
Isle Royale natural sciences research plan
1966
Linn, Robert M. |
Sumner, Lowell |
Sprugel, George |
The Galapagos coastal marine environments : a resource report to the Department of national parks and wildlife, Quito
1975
Wellington, Gerard M. |
Parques nacionales del Peru
1968
Vilchez Murga, Salomon |
Vilchez Murga, Salomón |