Is There an Optimum Level of Population? 

 - New York:  McGraw-Hill Book Company,  1971. 
 - 426p.;  21cm 
<br/><br/><label>ISBN: </label>070574715 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population
<br/><br/><label>Dewey Class. No.: </label>304.6  / OPT