Columbia subject headings:
Diplomacy--Poland--Russian occupation--20th century.
Poland--Foreign relations--Ukraine.
Poland--History--Russian occupation--20th century.
Harvard subject headings:
Diplomacy--Poland--Russian occupation--20th century.
Poland--Foreign relations--Ukraine
Poland--History--Russian occupation--20th century.
Princeton subject headings:
Piłsudski, Józef, 1867-1935.
Poland--Foreign relations--Ukraine.
Poland--Politics and government--1918-1945.
Ukraine--Foreign relations--Poland.
Ukraine--Politics and government--1917-1945.
Ukrainians--Poland--History.