Columbia subject headings:
Catholic Church--Poland--History--20th century--Sources.
Poland--Church history--20th century--Sources.
World War, 1939-1945--Religious aspects--Catholic Church--Sources.
Harvard subject headings:
Catholic Church--Poland--History--20th century--Sources.
Poland--Church history--20th century--Sources.
Rzeczpospolita Polska (Government-in-exile)--Sources.
World War, 1939-1945--Religious aspects--Catholic Church--Sources.
Princeton subject headings: