Plan Maestro para la proteccion y uso parque nacional Volcán Poás
1974
Master plan
Parque nacional del Manu : plan maestro
1986
Dourojeanni, Marc J. |
Ponce, Carlos F. |
Rios Rodriguez, Manuel A. |
Tovar S., Augusto |
Vasquez, Pedro G. |
Point Lobos state reserve : interpretation of a primitive landscape
Engbeck, Joseph H. |
Sequoia and Kings Canyon : natural sciences research plan
1966
Sumner, Lowell |
Sprugel, George |
Linn, Robert M. |
Everglades national park project : wildlife reconnaissance
1938
Beard, Daniel B. |