Barkley, Andrew <br/><br/>
Principles of agricultural: 
Andrew Barkley and Paul W. Barkley 
 - 2nd ed. 
 - New York:  Routledge,   2016. 
 - xxvi, 424p. 
<br/><br/><label>ISBN: </label>9781138914100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture - Economic aspects - United States
<br/><br/><label>Dewey Class. No.: </label>338.1  / BAP