Nature management and sustainable development : proceedings of the international congress, Groningen, the Netherlands, 6-9 December 1988 1989 Verwey, Wil D. |
Economics of protected areas : a new look at benefits and costs 1990 Dixon, John A. | Sherman, Paul B. |
Soldat des bêtes : vingt ans de lutte pour le défense de la faune africaine 1991 Dupuy, André-Roger | Dupuy, Alexe-Marie | Senghor, Léopold Sédar |
Wildlands : their protection and management in economic development 1988 Goodland, Robert J. A. | Ledec, George |
Plan maestro para el manejo y desarrollo del Parque Nacional Corcovado, Peninsula de Osa, Costa Rica 1979 Dickhaut, Christopher Vaughan |
Bulletin du Réseau alpin des espaces protégés = Bolletino della Reta delle aree protette alpine = Netzwerkinfo Alpenschutzgebiete