Columbia subject headings:
Harvard subject headings:
Advertising, Newspaper--Switzerland--Fribourg--History.
Fribourg (Switzerland)--Social life and customs--19th century.
Fribourg (Switzerland)--Social life and customs--20th century.
Swiss newspapers--History.
Princeton subject headings:
Advertising, Newspaper--Switzerland--Fribourg--History.
Fribourg (Switzerland)--Social life and customs--19th century.
Fribourg (Switzerland)--Social life and customs--20th century.
Swiss newspapers--History.