Tilley, David F. <br/><br/>
Aerobic wastewater treatment processes :  history and development / 
David F Tilley. 
 - London ;  New York :  IWA Publishing,  2011. 
 - viii, 97 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9781843395423  RM339.48 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--History.<br/>Sewage--Purification--Activated sludge process.