Hartman-Peterson,Preben <br/><br/>
Encyclopediaof science &;technology 

 - Claremont  New Africa Books  2002 
 - 301 pages  Illustrations  28 cm 
<br/><br/><label>ISBN: </label>9781869283841 
<br/><br/><label>Dewey Class. No.: </label>ST 503 HART