Food and Agriculture. 

 - San Francisco California (England) W. H. Freeman and Company.  1976 
 - 154 p. 
<br/><br/><label>LCCN: </label>172126 
<br/><br/><label>Subjects--Personal Names: </label><br/>Agricultura- producción. i.t.
<br/><br/><label>Dewey Class. No.: </label>630 A8