Columbia subject headings:
Clerks--Germany--History.
Social classes--Germany--History.
White collar workers--Germany--History.
White collar workers--Political activity--Germany--History.
Harvard subject headings:
Germany--Social conditions.
White collar workers--Germany.
Working class--Germany
Princeton subject headings:
Clerks--Germany--History.
Social classes--Germany--History.
White collar workers--Germany--History.
White collar workers--Germany--Political activity--History.