Ehrlich, Paul R. <br/><br/>
Population resources environment;  issues in human ecology / 
Paul R. Ehrlich, Anne H. Ehrlich. 
 - San Francisco :  W. H. Freeman,  1970. 
 - 383 p. :  ill. ;  26 cm. 
 - A Series of books in biology. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0716706806 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.<br/>Pollution.<br/>Human ecology.