River pollution 
by L. B. Singh..[et..al.] 
 - New Delhi  APH Publishing Corporatioon  2007 
 - vi, 183 p.  22 cm ( Hb.) 
<br/><br/> Includes  bibliograpgical refrences 
<br/><br/><label>ISBN: </label>8131300854  395.00 
<br/><br/><label>Source: </label> D.B.Act / Pub 
<br/><br/><label>LCCN: </label>ENG-85826 
<br/><br/><label>Dewey Class. No.: </label>363.7394