Crites, Ronald W., <br/><br/>
Natural wastewater treatment systems / 
Ronald W. Crites, E. Joe Middlebrooks, Robert K. Bastian, Sherwood C. Reed. 
 - Second edition. 
 - xxiv, 525 pages :  illustrations ;  25 cm. 
<br/><br/> Revised edition of: Natural wastewater treatment systems / Ronald W. Crites, E. Joe Middlebrooks, Sherwood C. Reed. 2006. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781466583269  RM633.84 1466583266 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Biological treatment.<br/>Sewage sludge--Management.