Biofilm reactors / 
prepared by the Biofilm Reactors Task Force of the Water Environment Federation 
 - Alexandria, Va. :  New York :  WEF Press ;  McGraw Hill,  c2011 
 - xxxix, 565 p. :  ill. ;  25 cm. 
 - WEF manual of practice ;  no. 35 .
 - Manual of practice ;  no. 35 .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780071737074 (hbk.) 0071737073 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Fixed-film biological process