Langer, R. H. M. (Reinhart Hugo Michael), 1921- <br/><br/>
Agricultural plants / 
R.H.M. Langer & G.D. Hill; illustrations by Karen Mason. 
 - 2nd ed. 
 - Cambridge:  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>LC Class. No.: </label>SB 91 LAN 1991