Ritson, Christopher. <br/><br/>
Agricultural economics ; principles and policy 

 - London :  Crosby Loockwood Staples,  1977 
 - 409 p. 
<br/><br/><label>LCCN: </label>48793 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Aspectos económicos.
<br/><br/><label>Dewey Class. No.: </label>338.1016  / R5