Langer, R. H. M.  1921- <br/><br/>
Agricultural plants / 
R.H.M. Langer and  G.D. Hill  
 - 2nd ed. 
 - 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 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops.
<br/><br/><label>Dewey Class. No.: </label>631  / LAA 1991