Singer, S. Fred <br/><br/>
Is there an optimum level of population? / 
S. Fred Singer 
 - New York :  McGraw-Hill ,  1971 
 - xiv, 426p. ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population growth<br/>United States
<br/><br/><label>Dewey Class. No.: </label>312.5 Us  / SIN