Cox, George W. <br/><br/>
Agricultural ecology :  an analysis of World food production systems / 
George W. Cox and Michael D. Atkins. 
 - San Francisco :  W. H. Freeman,  1979. 
 - 721 p. ;  24 cm. 
<br/><br/>Includes index and bibliography. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0716710463 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology.<br/>Agriculture.