Welch, E. B. <br/><br/>
Ecological effects of waste water / 
E.B. Welch ; with hydrographic characteristics by T. Lindell. 
 - Cambridge [Eng.] ;  New York :  Cambridge University Press,  1980. 
 - xii, 337 p. :  ill. ;  24 cm. 
<br/><br/> Includes bibliographical reference and index. 
<br/><br/>Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>0521224950.  0521295254 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Environmental aspects.
<br/><br/><label>LC Class. No.: </label>DUCE QH545.S49 W44