Columbia subject headings:
Bonhoeffer, Dietrich, 1906-1945.
Christian ethics--History--20th century.
Christian ethics.
Harvard subject headings:
Bonhoeffer, Dietrich, 1906-1945--Contributions in Christian ethics.
Bonhoeffer, Dietrich, 1906-1945--Ethics.
Christian ethics--History--20th century
Princeton subject headings:
Bonhoeffer, Dietrich, 1906-1945.
Christian ethics--History--20th century.