Cox, George W. <br/><br/>
Agricultural ecology  :  an analysis of world food production syst ems / 
George W.Cox. 
 - San Francisco :  W. H. Freeman,  1979. 
 - x, 721 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical refernces 
<br/><br/><label>ISBN: </label>0716710463 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>630