Langer, R. H. M. <br/><br/>
Agricultural plants / 
R.H.M. Langer and G.D. Hill  
 - 2nd ed. 
 - Cambridge :  New York :  Cambridge University Press,  1991. 
 - xiii, 387 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0521405459 0521405637  9780521405638 
<br/><br/><label>LCCN: </label>91002246  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops.
<br/><br/><label>Dewey Class. No.: </label>631  / LAA