Columbia subject headings:
Harvard subject headings:
Berdi︠a︡ev, Nikolaĭ, 1874-1948
Bonhoeffer, Dietrich, 1906-1945
Maine de Biran, Pierre, 1766-1824
Phenomenology.
Philosophers--Biography
Philosophy.
Princeton subject headings:
Berdi︠a︡ev, Nikolaĭ, 1874-1948.
Bonhoeffer, Dietrich, 1906-1945.
Maine de Biran, Pierre, 1766-1824
Phenomenology.
Philosophers--Biography.
Philosophy.