Smith, C. Wayne <br/><br/>
Crop production :  evolution, history, and technology / 
C. Wayne Smith 
 - New York :  John Wiley & Sons,  1995 
 - 469 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography : p. 455-457 
<br/><br/><label>ISBN: </label>0471079723  RM157.49 
<br/><br/><label>LCCN: </label>95-12070 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fields crops--United States