Columbia subject headings:
Harvard subject headings:
Learned institutions and societies--Germany--Berlin--History.
Learning and scholarship--Germany--History.
Leibniz-Sozietät der Wissenschaften--History.
Leibniz-Tag--History.
Speeches, addresses, etc., German
Princeton subject headings:
Learned institutions and societies--Germany--Berlin--History.
Learning and scholarship--Germany--History.
Leibniz-Sozietät der Wissenschaften--History.
Leibniz-Tag--History.
Speeches, addresses, etc., German.