Promoting farmer innovation : harnessing local environmental knowledge in East Africa 1999 Critchley, Will |
Conservation and utilization of natural resources in the East Usambara forest reserves : conventional views and local perspectives 1998 Kessy, John Francis |
Managing biodiversity : national systems of conservation and innovation in Africa 1998 Mugabe, John | Clark, Norman |
Southern Africa beyond the millenium : environmental trends and scenarios to 2015 1997 Dalal-Clayton, D. B. (D. Barry) |
Environmental assessment in Tanzania : a needs assessment for training 1995 Mwalyosi, Raphael B. B. | Mohamed, Sitna | Hughes, Ross | Dalal-Clayton, D. B. (D. Barry) |
The hand of man : soil conservation in Kondoa eroded area, Tanzania 1993 Christiansson, Carl | Mbegu, Alfred C. | Yrgard, Anders |