Statistical commision   Report on the 16th session (5-15 oct. 1970).    

 - New York  United Nations          1971 
 - v,52p.  cm. 
<br/><br/> Supplement No.2 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:3.N71, L1/UN