Conservation for sustainable agricultural development in the Sudano-Sahelian region of Africa : technical papers from a consulutation, Banjul, The Gambia, 27 May - 2 June 1989
1990
Conservation strategies
Diversity for development : the strategy of the International Plant Genetic Resources Institute
1993
Environment in Poland : issues and solutions
1993
Nowicki, M. |
La planification et l'application d'un développement durable comme principale stratégie de conservation des ressources dans la région du Parc national de Kahuzi-Biega (Zaïre)
1989
Kasisi, Robert Bagula |