Columbia subject headings:
Akademie der Wissenschaften der DDR--History.
Learned institutions and societies--Germany--Berlin--History.
Research institutes--Germany (East)--History.
Research institutes--Germany--History.
Research--Germany (East)--History.
Research--Germany--History.
Harvard subject headings:
Akademie der Wissenschaften der DDR--History.
Learned institutions and societies--Germany--Berlin--History.
Research institutes--Germany (East)--History.
Research institutes--Germany--History.
Research--Germany (East)--History.
Research--Germany--History.
Princeton subject headings: