Thimm, Heinz- Ulrich <br/><br/>
Development projects in the Sudan: an analysis of their reports with implications for research and training in Arid land management 
by Heinz- Ulrich Thimm 
 -  United Nations University  1979 
 - 58p. 
<br/><br/><label>Dewey Class. No.: </label>Y11x624 Un3