Regarding the theory of two Russian nationalities

Filevich, I.P.Regarding the theory of two Russian nationalities / prof.I.P.Filevich.- Lviv: ed."Galician -Russian mother", 1902. -[2], 59 s .. -Bibliogr.In the tuning.Note .. - Ott.From the "Scientific and literary collection of the Galician-Russian matrix", 1901, Prince.2-4..1. People, Russian language (collection).Electronic copy source: PBOriginal storage: St. Petersburg State University