Columbia subject headings:
White collar workers--Europe.
White collar workers--Political activity--Europe.
White collar workers--Political activity--United States.
White collar workers--United States.
Harvard subject headings:
White collar workers--Europe--Political activity.
White collar workers--Europe.
White collar workers--Political activity--Europe.
White collar workers--Political activity--United States.
White collar workers--United States--Political activity.
White collar workers--United States.
Princeton subject headings:
White collar workers--Europe--Political activity.
White collar workers--Europe.
White collar workers--United States--Political activity.
White collar workers--United States.