Population resources environment : issues in human ecology 
Ehrlich, Paul R. 
 -  W.H. Freeman and Company.  1970 
 - 383 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>0-7167-0680-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population -- addresses, essays, lectures.
<br/><br/><label>Dewey Class. No.: </label>333.7 E337 1970