World population and future resources :  the proceedings of the Second Centennial Academic Conference of Northwestern University, Evanston, Illinois, March, 1951/ 
edited by Paul K. Hatt 
 - New York :  American Book Company,  1952 
 - American sociology series .
<br/><br/><label>LCCN: </label>52-7994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population--Congresses<br/>Natural resources--Congresses<br/>Food supply--Congresses