Columbia subject headings:
Piłsudski, Józef, 1867-1935--Congresses.
Piłsudski, Józef, 1867-1935.
Harvard subject headings:
Piłsudski, Józef, 1867-1935--Congresses.
Piłsudski, Józef, 1867-1935.
Princeton subject headings: