Preliminary ecological assessment of the Saad ed Din, Awdal Region
1997
MacClanahan, T. R. |
Obura, David O. |
Natural resources
Un plan para la conservación y el desarrollo de la Provincia de Bocas del Toro : una propuesta
1985
Moore, Alan |
The use of fauna and flora as a contribution to environmentally sound development in the Sahel. Pilot project : a pre-feasibility study
1982
Duncan, Patrick |
Esser, Jochen |