Tilley, David F. <br/><br/>
Aerobic wastewater treatment processes :  history and development / 
David F. Tilley 
 - London :  IWA,  c2011 
 - viii, 97 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. [95]-97) 
<br/><br/><label>ISBN: </label>9781843395423 1843395428 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Supply--history<br/>Sewage--Purification--History<br/>Sewage--Purification--Activated sludge process--History