Columbia subject headings:
Families--Germany--History--19th century.
Families--Germany--History--20th century.
Germany--Social life and customs.
Harvard subject headings:
Families--Germany--History--19th century.
Families--Germany--History--20th century.
Germany--Social life and customs.
Princeton subject headings:
Families--Germany--History--19th century.
Families--Germany--History--20th century.
Germany--Social life and customs.