Preussische Akademie der Wissenschaften. Physikalisch-Mathematische Klasse.
Proceedings of the Prussian Academy of Sciences, 1851-1945.
Letters; minutes.
Learned institutions and societies -- Germany.
Mathematics -- Learned insitutions and societies -- Germany
Physics -- Learned insitutions and societies -- Germany
Minutes. aat
AIP-ICOS
Archiv der Berlin-Brandenburgische Akademie der Wissenschaften. JgĖerstrasse 22/23, 10117 Berlin