Columbia subject headings:
Catholic Church--Education--Germany--History--20th century.
Catholic Church--Germany--History--20th century.
World War, 1914-1918--Religious aspects--Catholic Church.
Harvard subject headings:
Princeton subject headings:
Catholic Church--Education--Germany--History--20th century.
Catholic Church--Germany--History--20th century.
World War, 1914-1918--Religious aspects--Catholic Church.