Paul R Ehrlich, Anne H Ehrlich <br/><br/>
Population resources environment : issues in human ecology 

 - W H Freeman, San Francisco  c1970 
 - 383p 
<br/><br/><label>ISBN: </label>0-7167-0680-6 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Sociology
<br/><br/><label>Dewey Class. No.: </label>301.32 Ehr/Ehr