Columbia subject headings:
Political science--Germany--Congresses.
Political science--History--Congresses.
Political science--Philosophy--Congresses.
Science and state--Congresses.
Science and state--Germany--Congresses.
Harvard subject headings:
Political science--Germany--Congresses.
Political science--History--Congresses
Political science--Philosophy--Congresses
Science and state--Congresses.
Science and state--Germany--Congresses.
Princeton subject headings: