Black, John D. <br/><br/>
Introduction to economics for agriculture 
by John D. Black 
 - New York  Macmillan  1953 
 - 727p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture --Economic aspects
<br/><br/><label>Dewey Class. No.: </label>Z4 B565