Hirsch, A. Adler. <br/><br/>
Manual for water plant operators/ 
A. A. Hirsch. 
 - New York :  Chemical publishing company, inc.,  c1945. 
 - xvii, 386 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><br/>english 
<br/><br/><label>LCCN: </label>46002552  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply engineering.<br/>Water--Purification.
<br/><br/><label>LC Class. No.: </label>TD345  / .H5 
<br/><br/><label>Dewey Class. No.: </label>628.16/HIM