Columbia subject headings:
Harvard subject headings:
Employees--Germany (East)--History.
Work and family--Germany (East)--History.
Work environment--Germany (East)--History.
Work-life balance--Germany (East)--History.
Working class--Germany (East)--History.
Princeton subject headings:
Factories--Germany (East).
Germany (East)--Economic conditions.
Germany (East)--Social life and customs.
Working class--Germany (East)