The use of high-purity oxygen in the activated sludge process / 
editor: J. R. McWhirter ; editor-in-chief: Richard Prober 
 - West Palm Beach :  CRC Press,  1978 
 - 2 volumes :  illustrations ;  26 cm. 
 - Water pollution control technology series .
<br/><br/><label>ISBN: </label>0849351006 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Activated sludge process<br/>Oxygen