Black, John Donald. <br/><br/>
Economics for agriculture 

 - Cambridge :  Harvard University Press,  1959 
 - 719 p.  : ilus. 
<br/><br/><label>LCCN: </label>17695 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Aspectos económicos.
<br/><br/><label>Dewey Class. No.: </label>338.1  / B53