Basic texts. 

 - Rome :  FAO ,  1968 
 - 2 vols. :  ill. ;  32 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural economics
<br/><br/><label>Dewey Class. No.: </label>630  / FAO-11