Olivry, J.C. <br/><br/>
The sick rivers of Africa - or the lasting consequences of the two last decades drought in the Sudanese-Sahelian regions 

 - New Delhi (India):   1992.  
 - 18 p. 
<br/><br/> 10 illus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Recurso Natural<br/>Rio<br/>Hidrologia<br/>Drenagem<br/>Africa