National parks and wildlife development plan (draft for comments)
1987
Conservation strategies
Parks and playgrounds for national development
1973
Maqbool Ellahie, S. |
A national conservation plan for Indonesia. vol. 8 : national park development and general topics
1981
MacKinnon, John Ramsay |
Europa braucht Naturparke !
Strzygowski, Walter |
Parques nacionales españoles
1962
Muñoz Goyanes, Guillermo |
Parque nacional de la Montaña de Covadonga
1967
Muñoz Goyanes, Guillermo |
Ochrona Przyrody i jej Zasobów : problemy i metody
1965
Szafer, Wladyslaw |