Simmons, Ian Gordon <br/><br/>
The ecology of natural resources 
I.G. Simmons 
 - London  Edward Arnold  1974 
 - 424 p. : ill. ; 24 cm. 
<br/><br/>p. 382-405 
<br/><br/><label>ISBN: </label>071315733X 
<br/><br/><label>LCCN: </label>75-307346 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology<br/>Natural resources