Periyar University,. <br/><br/>
MA; Environmental Studies (Tamil Medium)/ 
PER 
 - Salem  Periyar University, 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science
<br/><br/><label>Dewey Class. No.: </label>577  / PER