Columbia subject headings:
Poland--Foreign relations--Ukraine.
Ukraine--Foreign relations--Poland.
Ukraine--Politics and government--1917-1945.
Ukraïnsʹka Narodni︠a︡ Respublika (Government-in-exile)
Harvard subject headings:
Poland--Foreign relations--Ukraine
Ukraine--Foreign relations--Poland.
Ukraine--Politics and government--1917-1945.
Ukraïnsʹka Narodni︠a︡ Respublika (Government-in-exile)
Princeton subject headings:
Poland--Politics and government--1918-1945.
Poland--Relations--Ukraine.
Ukraine--History--1921-1944.
Ukraine--History--20th century--Autonomy and independence movements.
Ukraine--Politics and government--1917-1945.
Ukraine--Relations--Poland.