Columbia subject headings:
Harvard subject headings:
World War, 1939-1945--Collaborationists--Europe--Congresses.
World War, 1939-1945--Europe--Congresses.
World War, 1939-1945--Occupied territories--Congresses.
World War, 1939-1945--Underground movements--Congresses.
Princeton subject headings:
Anti-Nazi movement--Europe--Congresses.
World War, 1939-1945--Collaborationists--Europe--Congresses.
World War, 1939-1945--Underground movements--Europe--Congresses.