1
Publicado 1996
“...IUCN Commission on National Parks and Protected Areas...”
Libro
2
Publicado 1985
“...IUCN Commission on National Parks and protected areas...”
Libro
3
Libro
4
Publicado 1985
“...Working Session of IUCN's Commission on National Parks and Protected Areas, 25 th...”
Libro
5
por Banque Mondiale, Banque européenne dïinvestssement
Publicado 1994
“...IUCN, Commission on National Parks and Protected areas...”Publicado 1994
Libro
6
Publicado 1981
“...Meeting of IUCN's Commission on National Parks and Protected Areas, 17a. 1980 Cameroon...”
Libro