The plant :    the stem :    the buds :    the leaves. 

 - Rome :    FAO,    1977. 
 - 30 p. :    ill. ;    21 cm. 
 - Better farming series ;    no. 2 .
<br/><br/><label>ISBN: </label>9251001413 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant physiology.<br/> Crops.<br/> Plants.