Ehrlich, Paul R. <br/><br/>
Ecoscience :  population, resources, environment / 
Paul R. Ehrlich, Anne H. Ehrlich, John P. Holdren. 
 - San Francisco :  W.H. Freeman,  c1977. 
 - xv, 1051 p. :  ill. 
<br/><br/> First-2d ed. published under title: Population, resources, environment. 
<br/><br/><label>ISBN: </label>0716700298 (pbk.) 0716705672 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.<br/>Pollution.<br/>Human ecology.