Punmia, B. C. <br/><br/>
Environmental engineering 2 :  wastewater engineering / 
B. C. Punmia, Arun K. Jain and Ashok K. Jain 
 - New Delhi  Laxmi  1988 
 - xv, 655p. :ill. ;  Pbk. 
<br/><br/><label>ISBN: </label>8170060916 
<br/><br/><label>LC Class. No.: </label>TD345.P8 1988