Columbia subject headings:
Buber, Martin, 1878-1965.
Foerster, Erich, 1865-1945.
Religion--Study and teaching--Germany--Frankfurt am Main--History--20th century.
Theology, Doctrinal--Germany--Frankfurt am Main--History--20th century.
Theology--Study and teaching--Germany--Frankfurt am Main--History--20th century.
Tillich, Paul, 1886-1965.
Universität Frankfurt am Main. Fachbereich 6, Religionswissenschaften--Faculty.
Harvard subject headings:
Buber, Martin, 1878-1965
Foerster, Erich, 1865-1945.
Protestants--Germany--Frankfurt am Main--History.
Theology, Doctrinal--Germany--Frankfurt am Main--History.
Tillich, Paul, 1886-1965
Princeton subject headings: