Bertram G. C. L. <br/><br/>
Population trends and the world's biological  resources 

 -  1949 
 - Occasional papers on eugenics, 5 .
<br/><br/><label>Standard No.: </label>68040 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>Y1:50G, H9