Crites, Ronald W. <br/><br/>
Natural wastewater treatment systems / 
Ronald W. Crites, E. Joe Middlebrooks, Sherwood C. Reed 
 - Boca Raton, FL :  CRC/Taylor & Francis,  2006 
 - 552 p. :  ill. ;  24 cm. 
 - Civil and environmental engineering .
 - Civil and environmental engineering .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0849338042 9780849338045 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Biological treatment<br/>Sewage sludge--Management