Columbia subject headings:
Harvard subject headings:
Chocolate industry--Germany--History--19th century.
Chocolate industry--Germany--History--20th century.
Chocolate industry--Germany--History.
Family-owned business enterprises--Germany--History--19th century.
Family-owned business enterprises--Germany--History--20th century.
Stollwerck (Firm)--History.
Princeton subject headings:
Chocolate industry--Germany--History--19th century.
Chocolate industry--Germany--History--20th century.
Family-owned business enterprises--Germany--History--19th century.
Family-owned business enterprises--Germany--History--20th century.
Stollwerck (Firm)--History.