Smith, Robert Leo <br/><br/>
The ecology of man  an ecosystem approach 
by Robert Leo Smith 
 - 2nd ed. 
 - New York  Harper & Row  1976 
 - 399 p.: ill. ; 28 cm. 
<br/><br/> Includes index 
<br/><br/>p.390-394 
<br/><br/><label>ISBN: </label>0060463384 
<br/><br/><label>LCCN: </label>75-42043 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology--Addresses, essays, lectures