Guidelines for aid agencies for improved conservation and sustainable use of tropical and sub-tropical wetlands 1996
Population and global security (Environmental challenges II) 1994 Polunin, Nicholas | Nazim, Mohammad |
Facilitating sustainable agricultural development in Zimbabwe : key factors and necessary incentives 1994 Otzen, Uwe | Gumbo, Davison J. | Addy, David Nii | Althaus-Grewe, Karin | Greib, Martina |
Summary report of 17 years of pilot experience towards sustainable development at the Nazinga game ranch, Burkina Faso 1990 Lungren, Clark G. |
Water for sustainable development in the twenty-first century 1993 Biswas, Asit K. | Jellali, Mohammed | Stout, Glenn E. |