Ecological engineering  an introduction to ecotechnology 
ed. by William J. Mitsch and Sven Erik Jorgensen. 
 - New York  Wiley  1989 
 - xiv, 472p. 
<br/><br/><label>ISBN: </label>0471625590 
<br/><br/><label>Dewey Class. No.: </label>620.85  / N89