Das,C. <br/><br/>
Ucchatar madhyamik ganit porichoy 

 - 1st ed. 
 - Guwahati:  Bhabani Pub. 
 - 561. 
<br/><br/><label>ISBN: </label>978-93-86624-63-9 
<br/><br/><label>Dewey Class. No.: </label> / DAS