Carl, Etnier  . <br/><br/>
Ecological engineering for waste water treatment /  
edited by Carl Etnier,Bjorn Gutestam. 
 - 2nd ed /   . 
 - New York :   Lewis Publishers ,   1997. 
 - xx ,415p. :   ill.,figs,tables ;   23cm  Floppy .  
<br/><br/>Includes bibliographical reference and index 
<br/><br/><label>ISBN: </label>0873719905  NULL 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGICAL ENGINEERING 
<br/><br/><label>Dewey Class. No.: </label>628.43  / ETN/E