Ecological aspects of used-water treatment / 
edited by C. R. Curds and H. A. Hawkes 
 - London :  Academic Press,  1975 
 - v. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/> The organisms and their ecology -  Processes and their ecology  v. 1.  v. 3. 
<br/><br/><label>ISBN: </label>0121995018 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Microbiology<br/>Sewage--Purification--Biological treatment<br/>Freshwater ecology