Grady, C. P. Leslie <br/><br/>
Biological Wastewater Treatment   : Theory and Applications 
/by C. P. Leslie Grady et.al. 
 - 3rd ed. 
 - New York:  CRC Press,  2011. 
 - xxix,991p. 
<br/><br/><label>ISBN: </label>9780849396793 
<br/><br/><label>Dewey Class. No.: </label>628.35  / GRA/B