Columbia subject headings:
Bultmann, Rudolf, 1884-1976.
Preaching--Germany--History--20th century.
Harvard subject headings:
Bultmann, Rudolf, 1884-1976--Contributions in preaching.
Existentialism--History--20th century.
Luther, Martin, 1483-1546
Preaching--Germany--History--20th century.
Princeton subject headings: