Langer, R. H. M <br/><br/>
Agricultural plants 

 - 2nd ed 
 - Cambridge:  Cambridge University Press,  1991 
 - xiii, 387 p. : ill. ; 24 cm 
<br/><br/><label>ISBN: </label>9780521405638 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops
<br/><br/><label>Dewey Class. No.: </label>631 LAN