Marco conceptual y plan de accion para el desarrollo del sistema internacional de areas protegidas para la paz Si-A-Paz
1991
Protected areas
Conservation of natural, scenic and historic areas in the Lesser Antilles
1965
Carlozzi, Carl A. |
The national parks of Costa Rica
1981
Boza, Mario A. |
Mendoza, Rolando |
British national parks : Scotland without a national park
1983
Sekyi, Patrick E. |
British national parks : conflicts, compromises and solutions in primary land uses
1982
Sekyi, Patrick E. |
Evolution of the concept of national park in the United States and Britain
1981
Sekyi, Patrick E. |