Sourcebook of alternative technologies for freshwa 

 - Osaka  UNEP            1998 
 - 173p.  cm. 
 - Its, Technical publication series, 8a. .
<br/><br/> United Nations Environment Programme, water Branch 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>X 9(D85)OgF.6.N9, N8