Proceeding of the national academy of sciences 

 - Allahabad  Academy of sciences  1934 
 -  vol.1, no.1 .
<br/><br/> Lib. has v.52 (1982), v.54 (1984), V.56 (1986), v.58(1988), V.59 (1989) 
<br/><br/><label>Universal Decimal Class. No.: </label>5(540)(06)(05)  / PRO