Columbia subject headings:
Catholic Church--Germany--History--1933-1945.
Catholic Church--Missions--Germany--History--20th century.
National socialism and religion.
Papacy--History--1929-1945.
Päpstliches Werk der Glaubensverbreitung im Bistum Aachen.
Harvard subject headings:
Catholic Church--Germany--History--1933-1945.
Catholic Church--Missions--Germany--History--20th century.
Germany--Church history--1933-1945.
Missions--Germany--History--20th century.
National socialism and religion.
Papacy--History--1929-1945
Päpstliche Werk der Glaubensverbreitung (Aachen)--History.
Päpstliches Werk der Glaubensverbreitung im Bistum Aachen.
Princeton subject headings:
Catholic Church--Germany--History--1933-1945.
Catholic Church--Missions--Germany--History--20th century.
Germany--Church history--1933-1945.
Missions--Germany--History--20th century.
Papacy--History--1929-1945.
Päpstliche Werk der Glaubensverbreitung (Aachen)--History.