Columbia subject headings:
Odesʹka oblastʹ (Ukraine)--History--Revolution, 1917-1921--Causes.
Revolutionaries--Ukraine--Odesʹka oblastʹ.
Harvard subject headings:
Odesʹka oblastʹ (Ukraine)--History--Revolution, 1917-1921--Causes.
Revolutionaries--Ukraine--Odesʹka oblastʹ.
Princeton subject headings:
Odeskaḱa oblastʹ (Ukraine)--History--Revolution, 1917-1921--Causes.
Revolutionaries--Ukraine--Odesskai︠a︡ oblastʹ.