Food production systems: Food for the world 

 - Milton Keynes  Open University Press  1978 
 - pp. 
<br/><br/><label>ISBN: </label> UKP 3.50 
<br/><br/><label>Source: </label> UKP 3.50 
<br/><br/><label>Dewey Class. No.: </label>641 FOO