Columbia subject headings:
Communism and science--Germany (East)--History--Congresses.
Communism and social sciences--Germany (East)--History--Congresses.
Science--Germany (East)--History--Congresses.
Social sciences--Germany (East)--History--Congresses.
Harvard subject headings:
Science--Political aspects--Germany (East)--Congresses.
Princeton subject headings:
Science--Political aspects--Germany (East)--Congresses.