Food production systems course :  units 14 National priorities and 15 International relationships /  [Book]. 
Open University.  
 - Milton Keynes :   Open University Press,   1978. 
 - 60 p. :  ill. ;  30 cm. 
<br/><br/><label>ISBN: </label>0335063756 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Food production.