Devamishra,Aravinda. <br/><br/>
Banijyik Patiganit Aru Prathamik Porisankhya Bigyan 

 - 1st. 
 - Guwahati:  Assam Book Depu. 
 - 483. 
<br/><br/><label>Dewey Class. No.: </label> / DEV