Is there an optimum level of population? / 
Edited by S. Fred Singer 
 - New York :  McGraw-Hill,  c 1971. 
 - xiii, 426 p. :  ill. ;  22 cm. 
<br/><br/> includes Index. 
<br/><br/>47  47 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.
<br/><br/><label>Dewey Class. No.: </label>317.3 / S64i