FAO/IPGRI technical guodelines  for the safe movement of germplasm :    allium SSp no. 18 /  
edited by M.Diekmann 
 - Rome :    FAO Publications,    1997 
 - 1997  :    iil.col. ;    21 cm. 
<br/><br/><label>ISBN: </label>9290433469 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Germplasm resources<br/> Plant breeding<br/> Crop improvement