Columbia subject headings:
Harvard subject headings:
Poland--Foreign relations--Ukraine--Sources.
Ukraine--Foreign relations--Poland--Sources.
World War, 1939-1945--Ukraine--Galicia, Eastern--Sources.
World War, 1939-1945--Ukraine--Volynsʹka oblastʹ--Sources.
Princeton subject headings:
Poland--Foreign relations--Ukraine--Sources.
Ukraine--Foreign relations--Poland--Sources.
World War, 1939-1945--Ukraine--Galicia, Eastern--Sources.
World War, 1939-1945--Ukraine--Volynsʹka oblastʹ--Sources.