World population   " Challenge to development, summary of the highlights" 

 - New  York UN        1966 
 - iii; 46p.  cm. 
 - United Nations Publication .
<br/><br/><label>Standard No.: </label>18039 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"Y:5.1.N6, K6/UN"