Singer, Fred S, ed. <br/><br/>
Is there an optimum level of population? 

 - New York  McGraw - hill book company  1971 
 - xiii,426p.; 22cm. 
<br/><br/><label>ISBN: </label>70574715 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Energy<br/>food<br/>Minerals<br/>Population<br/>Social problem