Simmons ,I G <br/><br/>
Ecology of natural resources 

 - 2nd ed. 
 - England  Edward Amold  1974 
 - viii, 438 p.; ill 
<br/><br/><label>ISBN: </label>713163283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Ecoscience<br/>Natural resourcs<br/>Population and resources