World population and resources  : a report september 1955 
/ by Political and Economic Planning [PEP] 
. - London  : Political and Economic Planning, 1955
. - XXXVII-339 p.  ; 23 cm. 
<br/><br/><label>Source: </label>153079 
<br/><br/><label>Universal Decimal Class. No.: </label>312.