Polyakov Andrei. Chambers of Imperial Academy of Sciences, Kunstkamera and Library: Table II - plan of the 1st and 2nd floors of Imperial Academy of Sciences. 1741 (nota later)
Polyakov Andrei. Chambers of Imperial Academy of Sciences, Kunstkamera and Library: Table II - plan of the 1st and 2nd floors of Imperial Academy of Sciences. 1741 (nota later)