Ehrlich, R. Paul, <br/><br/>
Population, Resources, Environment: Issues In Human Ecology / 
Paul R. Ehrlich and Anne H. Ehrlich. 
 - America :  W.H. Freeman and Company,  1970. 
 - 383 pages,  26 cm. 
<br/><br/><label>ISBN: </label>9780716706809 (hbk.) 
<br/><br/><label>Dewey Class. No.: </label>301 EHR