Social indicates   Preliminary guidelines and illustrative series.    

 - New York  United Nations          1978 
 - iii,134p.  cm. 
<br/><br/> Statistical paper series M, no. 63. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:(E:85).1N45.N78r, L8/UN