Columbia subject headings:
Catholic Church--Germany--History--20th century.
Forced labor--Germany--History--20th century.
World War, 1939-1945--Conscript labor--Germany.
Harvard subject headings:
Catholic Church--Germany--History--20th century.
Forced labor--Germany--History--20th century
Germany--Church history--1933-1945.
World War, 1939-1945--Conscript labor--Germany.
Princeton subject headings:
Catholic Church--Germany--History--20th century.
Forced labor--Germany--History--20th century.
World War, 1939-1945--Conscript labor--Germany.