Columbia subject headings:
Polska Partia Robotnicza--History.
World War, 1939-1945--Poland--Warsaw.
Harvard subject headings:
Polska Partia Robotnicza--History.
World War, 1939-1945--Poland--Warsaw.
Princeton subject headings:
Polska Partia Robotnicza--History.
World War, 1939-1945--Poland--Warsaw.