Source book of alternative technologies for freshw 

 - N  Y U N       1998 
 - 247p  cm. 
 - "Its, Technical Publication Series; 8c. Unit of Sustainable Development and Environment, Water Branch. United Nations Environment Programme" .
<br/><br/><label>Standard No.: </label>4804 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Water Supply<br/>Industrial Economics
<br/><br/><label>Dewey Class. No.: </label>"X9(D85)0gF.791.N9, N9/UN"