Columbia subject headings:
Agriculture and state--Germany--History.
Industrial policy--Germany--History.
Pressure groups--Germany--History.
Social conflict--Germany--History.
Harvard subject headings:
Agriculture and state--Germany--History.
Industrial policy--Germany--History
Pressure groups--Germany--History.
Social conflict--Germany--History.
Princeton subject headings:
Agriculture and state--Germany--History.
Industrial policy--Germany--History.
Pressure groups--Germany--History.
Social conflict--Germany--History.