Annual report,1969-70. 

 - Calcutta  Indian Statistical Institute          1970 
 - viii,184p.  cm. 
 -  Vol.1 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B28.2,d.N70<N69r, L0.1-2