Columbia subject headings:
Harvard subject headings:
Economic development--Switzerland--Grenchen--History--19th century.
Economic development--Switzerland--Grenchen--History--20th century.
Grenchen (Switzerland)--History--19th century.
Grenchen (Switzerland)--History--20th century.
Grenchen (Switzerland)--Social conditions--19th century.
Grenchen (Switzerland)--Social conditions--20th century.
Industrialization--Switzerland--Grenchen--History--19th century.
Industrialization--Switzerland--Grenchen--History--20th century.
Princeton subject headings:
Clock and watch industry--Switzerland--Grenchen--History.
Grenchen (Switzerland)--History.