Columbia subject headings:
Europe--Relations--Germany--Prussia.
Germany--Relations--Germany--Prussia.
Prussia (Germany)--History.
Prussia (Germany)--Relations--Europe.
Prussia (Germany)--Relations--Germany.
Harvard subject headings:
Europe--Relations--Germany--Prussia.
Germany--Relations--Germany--Prussia.
Prussia (Germany)--History.
Prussia (Germany)--Relations--Europe.
Prussia (Germany)--Relations--Germany.
Princeton subject headings:
Europe--Relations--Prussia (Germany).
Germany--Relations--Prussia (Germany).
Prussia (Germany)--History.
Prussia (Germany)--Relations--Europe.
Prussia (Germany)--Relations--Germany.