Mortality and durability of the men's Orthodox population of European Russia

Bortkevich, Vladislav Iosifovich (1868-1931).Mortality and durability of the men's Orthodox population of European Russia: Cheat.In the meeting of the Fiz.-Mat.Departure27 Feb.1890 / Vladislav Bortkevich.- St. Petersburg: Type.Imp.Acad.Sciences, 1890. - [4], 102 p.;23. -Arr.to 63-MU. IM notes.Acad.scienceNumber 8..Electronic Source: PB