Columbia subject headings:
Church and state--Europe--History--20th century.
Europe--Church history--20th century.
World War, 1939-1945--Religious aspects.
Harvard subject headings:
Christianity and politics--History
Church and state--Europe--History--20th century.
Church and state--Germany--History--1933-1945
Church and state--Soviet Union--History--1917-
Europe--Church history--20th century.
Germany--Religion--1933-1945.
Soviet Union--Religion.
World War, 1939-1945--Religious aspects.
Princeton subject headings:
Church and state--Germany--History--1933-1945.
Church and state--Soviet Union.
Europe, Eastern--Religion--20th century.
Germany--Church history--1933-1945.
Soviet Union--Church history.