River pollution : a study of periyar/ 
by 
 - Kalady:  Department of History, Sree  Sankaracharya University of Sanskrit,  2011. 
 - 68p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution River<br/>Pollution Periyar<br/>Social Problems<br/>PG Dissertation History<br/>Social sciences
<br/><br/><label>Dewey Class. No.: </label>R HS 363.73  / RIV