Welch, E. B. <br/><br/>
Ecological effects of waste water 

 - New York   : Cambridge University Press,  1980 
 - xii,337p.   : ill.   ; 24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage<br/>Environmental aspects
<br/><br/><label>LC Class. No.: </label>QH545.S49W44