Columbia subject headings:
Harvard subject headings:
Anti-communist movements--Poland--Sources.
Poland--History--Occupation, 1939-1945--Sources.
World War, 1939-1945--Underground movements--Poland--Sources.
Princeton subject headings:
Anti-communist movements--Poland--Sources.
Poland--History--Occupation, 1939-1945--Sources.
World War, 1939-1945--Underground movements--Poland--Sources.