Columbia subject headings:
Bonhoeffer, Dietrich, 1906-1945. Sanctorum communio.
Christian sociology--History of doctrines--20th century.
Harvard subject headings:
Bonhoeffer, Dietrich, 1906-1945. Sanctorum Communio.
Christian sociology--History--20th century.
Church--History of doctrines--20th century
Princeton subject headings: