Columbia subject headings:
Harvard subject headings:
Poland--History--Wars of 1918-1921
Ukraine--History, Military.
Ukraine--History--Revolution, 1917-1921.
Ukraïnsʹka halyt︠s︡ʹka armii︠a︡--History.
Princeton subject headings:
Ukraine--History--Revolution, 1917-1921.
Ukraïnsʹka halyt︠s︡ʹka armii︠a︡.