Gerardi, Michael H. <br/><br/>
Nitrification and denitrification in the activated sludge process / 
Michael H. Gerardi 
 - New York :  John Wiley & Sons,  2002 
 - 193 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>0471065080 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Nitrogen removal<br/>Nitrification<br/>Sewage--Purification--Activated sludge process