Langer, R. H. M. <br/><br/>
Agricultural plants / 
R.H.M. Langer & G.D. Hill ; illustrations by Karen Mason. 
 - 2nd ed. 
 - Cambridge [ England ] :  Cambridge University Press,  1991. 
 - xiii,387p.:  ill.;  24cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0521405459 0521405637 ( pbk. ) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops.
<br/><br/><label>LC Class. No.: </label>SB91  / L35 1991