Report of a working group on Allium (fourth meeting) held at Institut f₁r Genetik und Kultupflanzenforschung, Gatersleben, Germany, 10 and 14 June, 1991. 

 - Rome :  1992. 
 - iii, 29 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Allium--Databases.<br/>Allium.