Population and development modelling    Proceedings 

 - New  York United Nations Publications      1981 
 - 120p.  cm. 
 - "Its, Population studies.73" .
<br/><br/><label>Standard No.: </label>17659 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Dewey Class. No.: </label>"Y:50aX:77, M1/UN"