Criteria for and approaches to water quality manag 

 - New  York New York U S A    1991 
 - 388p.  cm. 
 - "UN, Natural Resources Water Sereis, 26" .
<br/><br/><label>Standard No.: </label>115039 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>"D854, N1/UN"