Columbia subject headings:
Harvard subject headings:
Coffee industry--Germany--History--19th century.
Coffee industry--Germany--History--20th century.
Consumers--Germany--History--19th century.
Consumers--Germany--History--20th century.
Merchants--Germany--History--19th century.
Merchants--Germany--History--20th century.
Princeton subject headings:
Coffee industry--Germany--History--19th century.
Coffee industry--Germany--History--20th century.
Consumers--Germany--History--19th century.
Consumers--Germany--History--20th century.
Merchants--Germany--History--19th century.
Merchants--Germany--History--20th century.