Columbia subject headings:
Bonhoeffer, Dietrich, 1906-1945.
Bonhoeffer, Karl, 1868-1948.
Euthanasia--Germany--History.
Euthanasia--Moral and ethical aspects.
Euthanasia.
Involuntary sterilization--Moral and ethical aspects--Germany--History--1933-1945.
Involuntary sterilization.
Harvard subject headings:
Princeton subject headings:
Bonhoeffer, Dietrich, 1906-1945.
Bonhoeffer, Karl, 1868-1948.
Euthanasia--Germany--History--20th century.
Euthanasia--Moral and ethical aspects.
Involuntary sterilization--Moral and ethical aspects--Germany--History--20th century.