Nissen-Petersen, Erik. <br/><br/>
Harvesting rain water in semi-Arid Africa :   Spring protections /  
Erik Nissen-Petersen and Dr. Michael Lee. 
 - Nairobi :   ASAL Rainwater Harvesting,   1990. 
 - 29 p. :    ill. ;    30 cm. 
 - Manual ;   no. 6 .
<br/><br/>  Reserve. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water harvesting ----Africa, Semi-Arid.----<br/>Springs.----Africa, Semi-Arid.----<br/>Water- supply----Africa, Semi-Arid.----
<br/><br/><label>Dewey Class. No.: </label>628.11