Water chlorination principles and practices. 

 - [New York :  American Water Works Association,  c1973] 
 - vii, 84 p. :  ill. ;  23 cm. 
 - AWWA manual ;  M20 .
<br/><br/><label>ISBN: </label>0898670780. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water x Purification x Chlorination.
<br/><br/><label>LC Class. No.: </label>TD491  TD462  / .A49 no. M20 
<br/><br/><label>Dewey Class. No.: </label>628.1/662