Heady, Earl O. <br/><br/>
Economics of agricultural production and resourse use / 
by Earl O. Heady 
 - 850 páginas :  fig 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Aspectos económicos
<br/><br/><label>Dewey Class. No.: </label>338.1  / H43