Wather supply and wastedisposal management   Impact    

 - Nairobi  United Nations           1987 
 - 44p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>X9(D85).1.N8, M7/UN