Historical outline of the main physical observatory for 50 years of its activity.1849-1899.Part 1

Rykachev, Mikhail Alexandrovich (1840/41-1919).Historical outline of the main physical observatory for 50 years of its activity.1849-1899 / Comp.Dir.Observatory Acad.M. Rykachev.- St. Petersburg: Type.Imp.Acad.sciences.- 28 cm. -.I. The main physical observatory. 1.People (collection).Electronic copy source: PBOriginal storage: RGOPart 1. - 1899. - [430] p.Section.pag.: il., table .. -Dedicated.Emperor Nicholas II.Bibliogr.in the text and subscription.Note..I. Nicholas II (imp.). 1.People (collection).Electronic copy source: PBOriginal storage: RGO