DAS, LAIKHYAHIRA. <br/><br/>
SAMPURNA SIKHYA 

 - GUWAHATI  AMRITA PRAKASHAN  1983. 
 - 218. 
<br/><br/><label>Subjects--Index Terms: </label>Education 
<br/><br/><label>Dewey Class. No.: </label>370 DAS