Columbia subject headings:
Academic freedom--Europe--History.
Academic freedom--United States--History.
Academic freedom.
Intellectual freedom--Europe--History.
Intellectual freedom.
Harvard subject headings:
Academic freedom--Germany--Congresses.
Research--Europe--History--Congresses.
Research--Germany--History--Congresses.
Research--Law and legislation--Europe--Congresses.
Research--Law and legislation--Germany--Congresses.
Science and state--Germany--Congresses.
Science--Study and teaching--Law and legislation--Germany--Congresses.
Princeton subject headings: