Observations on swing swivel pendulums repusold produced in Paris and Pulkovo in 1893-1894 A. Sokolov

Sokolov, Alexey Petrovich (1853-1910).Observations over swing swivel pendulum reserves produced in Paris and Pulkovo in 1893-1894 A. Sokolov.- St. Petersburg: Type.Imp.Acad.Sciences, 1896. - [2], 78 p.;25. - (Notes of the Russian Geographical Society for General Geography. Materials for studying the distribution of gravity in Russia; T. 30, No. 2, ed. Edbnitsy and Yu.M. Shokalsky).-Summary of FR.Yaz..Electronic Source: PB