Ehrlich, Paul R. <br/><br/>
Population, resources, environment :   issues in human ecology /  
by Paul R. Ehrlich and Anne H. Ehrlich. 
 - 2nd ed. 
 - San Francisco :   W.H. Freeman,   1972. 
 - xiv, 509 p. :    ill. ;    27 cm. 
 - A series of books in biology   .
<br/><br/>  Third ed. published in 1977 under title: Ecoscience. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0716706954 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.--------<br/>Pollution.--------<br/>Human ecology.--------
<br/><br/><label>Dewey Class. No.: </label>301.3