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

 - 2 
 - Cambridge  CUP           1991 
 - 387p.  cm. 
<br/><br/><label>Standard No.: </label>52460 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant production<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:5, M2;N1