Ehrlich, Paul R. <br/><br/>
Human ecology; problems and solutions 
/ by Paul R. Ehrlich, Anne H. Ehrlich and John P. Holdren 
 - San Francisco  W. H. Freeman  1973 
 - xi, 304 p. illus. 24 cm. 
 - A Series of books in biology .
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0716705958 
<br/><br/><label>LCCN: </label>72-012828 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology<br/>Environmental policy