PUNMIA B. C.  <br/><br/>
WASTEWATER  ENGINEERING  

 - 1ST 
 - NEW DELHI   LAXMI PUBLICATIONS   1996 
<br/><br/><label>ISBN: </label>81-7008-091-6 
<br/><br/><label>Dewey Class. No.: </label>628.1  / 1