Cox, Charles R. <br/><br/>
Operation and control of water treatment processes / 
Charles R. Cox 
 - Second impression 
 - Geneve :  World Health Organization,  1969 
 - 392 p. :  ill. ;  25 cm. 
<br/><br/> Minor corrections introduced in the second impression are listed on page 391 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal
<br/><br/><label>National Library of Medicine Call No.: </label>WA785