Dr Punmia,  B. C <br/><br/>
Waste water engineering 

 - 2nd ed.  
 - New Delhi  Laxmi publication  2018 
 - 660 p 
<br/><br/><label>ISBN: </label>9788131805961 
<br/><br/><label>LC Class. No.: </label>TD 495 .P86/