Periyar University <br/><br/>
M.sc;Main Practical II: Waste Water Treatment/ 
Periyar University 
 -  Periyar University, 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>543.021  / PER