Sen,S.N. <br/><br/>
Sastram Indyayil 

 - 3rd Ed. 
 - Thiruvananthapuram  State Institute of Languages  1978 
 - 466p. 
 -  v.2 .
<br/><br/><label>Subjects--Index Terms: </label>Science history, India 
<br/><br/><label>Universal Decimal Class. No.: </label>5(540)=M  / SEN.2