Columbia subject headings:
Harvard subject headings:
Siegmund-Schultze, Friedrich, 1885-1969.
Social ethics.
Soziale Arbeitsgemeinschaft Berlin-Ost.
Theology, Doctrinal--History--20th century.
Princeton subject headings:
Siegmund-Schultze, Friedrich, 1885-1969.
Social ethics.
Soziale Arbeitsgemeinschaft Berlin-Ost.
Theology, Doctrinal--History--20th century.