Columbia subject headings:
Socialists--Poland--Biography.
World War, 1939-1945--Underground movements--Poland.
Żuławski, Zygmunt.
Harvard subject headings:
Poland--History--Occupation, 1939-1945
Poland--Politics and government--1918-1945
Polska Partia Socjalistyczna--History.
World War, 1939-1945--Underground movements--Poland.
Princeton subject headings: