Water Treatment Plant Operation :  A Field Study Training Program / 
Environmental Pratection Agency. 
 - Second Edition  Third Printing 
 - Sacramento, California :  Hornet Foundation, Inc.,  1990. 
 - vol. 
<br/><br/>Includes Index. 
<br/><br/> vol. 1 ( 1990, 659 p.)  vol. 2 ( 1990, 669 p.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Engineering