Classification by broad economic categries. 

 - New York  United Nations          1976 
 - xi,53p.  cm. 
<br/><br/> Statiscal papers series M, no.53, revi.1 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:(2:51).N76, L6.53/UN