Ground water in Africa 

 - New  York United Nations U S A    1973 
 - 170p.  cm. 
<br/><br/><label>Standard No.: </label>85252 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engneering
<br/><br/><label>Dewey Class. No.: </label>"X9(D24).6.N7, L3/UN"