Norbert, S. Antony <br/><br/>
Puvieyal soolalial muhamaithuvam 

 - 2nd ed. 
 - Colombo  Chemamadu Poththakasalai  2017 
 - 164p. 
<br/><br/><label>ISBN: </label>9789551857295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENVIRONMENTAL MANAGMENT
<br/><br/><label>Dewey Class. No.: </label>910  / N56