Poribesh arthanity. 
By Debajit Phukan 
 - 1st. 
 - Jorhat.:  Saikia press.,  2010. 
 - 260 p.:  20 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Enviornmental science. Poribesh Arthanity. 
<br/><br/><label>Dewey Class. No.: </label>333.7