Columbia subject headings:
Oppenheim (Germany)--History.
Oppenheim (Germany)--Religion.
Oppenheim (Germany)--Social conditions.
Harvard subject headings:
Oppenheim (Germany)--Church history.
Oppenheim (Germany)--Religious life and customs.
Oppenheim (Germany)--Social conditions.
Princeton subject headings:
Oppenheim (Germany)--History.
Oppenheim (Germany)--Religion.
Oppenheim (Germany)--Social conditions.