Columbia subject headings:
Church history--20th century.
Europe--Church history.
World War, 1939-1945--Religious aspects.
Harvard subject headings:
Church history--20th century.
Europe--Church history.
World War, 1939-1945--Religious aspects.
Princeton subject headings:
Church history--20th century.
Europe--Church history.
World War, 1939-1945--Religious aspects.