Columbia subject headings:
Business and politics--Switzerland--History--20th century.
Industrial relations--Switzerland--History--20th century.
Industrialists--Switzerland--History--20th century.
Machinery industry--Switzerland--History--20th century.
Metal trade--Switzerland--History--20th century.
Harvard subject headings:
Business and politics--Switzerland--History--20th century.
Industrial relations--Switzerland--History--20th century.
Industrialists--Switzerland--History--20th century.
Machinery industry--Switzerland--History--20th century.
Metal trade--Switzerland--History--20th century.
Princeton subject headings:
Business and politics--Switzerland--History--20th century.
Industrial relations--Switzerland--History--20th century.
Industrialists--Switzerland--History--20th century.
Machinery industry--Switzerland--History--20th century.
Metal trade--Switzerland--History--20th century.