Guide du Parc national des Virunga
1990
Delvingt, Willy |
Lejoly, Jean |
Mankoto Ma Mbaelele |
National parks
Wildlands : their protection and management in economic development
1988
Goodland, Robert J. A. |
Ledec, George |
Greenprints for the countryside : the story of Britain's national parks
1987
MacEwen, Ann |
MacEwen, Malcolm |
La naturaleza en España : los parques nacionales
1990
Racionero, Luis |
A roadside guide to Rocky Mountain National Park
1990
Willard, Beatrice Elizabeth |
Foster, Susan Quimby |
Yosemite : the embattled wilderness
1990
Runte, Alfred |
Servicio de parques nacionales areas silvestres de Nicaragua (primer borrador)
1983
Dilger F., R. |
Plan maestro para el manejo y desarrollo del Parque Nacional Corcovado, Peninsula de Osa, Costa Rica
1979
Dickhaut, Christopher Vaughan |
Friends of the National Parks : a report on friends group throughout the National Park System
1993
Machlis, Gary E. |
Medlin, Nancy C. |
Madagascar : revue de la conservation et des aires protégées
1989
Langrand, Olivier |
Nicoll, Martin E. |