Das,  Lila. <br/><br/>
Saikhik  Porimapon  aru  Porishankhya   Bijnan 

 - 4th /   2009. 
 - Golaghat:  Saraswati   Prakashan,  2009. 
 - 276p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Education, Educational  Measurement. 
<br/><br/><label>Dewey Class. No.: </label>370.15