Ruhengeri and its resources : an environmental profile of the Ruhengeri prefecture, Rwanda
1987
Weber, William |
Nyamulinda, Vincent |
Environmental surveys
Environmental perspectives on rural development strategies in rural Nigeria
1989
Segynola, Albert A. |
The Hadejia-Nguru wetlands project : hydrology and sustainable resource development of a Sahelian floodplain wetland
1989
Adams, Bill |
Hollis, Ted |
Human causes of forest depletion in Nigeria
1988
Osemeobo, Gbdebo Jonathan |