Proceedings of the Indian national science academy part A 

 - New Delhi  National science academy  1935 
 -  vol.1,no.1 .
<br/><br/> Lib. has v44(1978), v.46(1980)-v48(1982) 
<br/><br/><label>Universal Decimal Class. No.: </label>5(540)(06)(05)  / PROC