Conservation et utilisation rationnelle des écosystèmes forestiers en Afrique centrale. Dossier d'exécution 1989
Republic of Uganda. Sustainable development and forest conservation project, phase I final report 1990
Plan del sistema de areas protedigas de El Peten, Guatemala 1990 Godoy, Juan Carlos | Castro, Fernando |
The application of conservation science to sustainable development. Report to : Département Fédéral des Affaires Etrangères, Directorate for Development Cooperation and Humanitarian Aid, Bern 1990