TransliterationShakhmatov A.A. (Akademik). Vvedenie v kurs istorii russkogo yazyka. Chast I. Istoricheskiy protsess obrazovaniya russkikh plemen i narechiy.
In EnglishA.A. Chechmatov (Academician). An introduction to the history of the Russian language. Part I. The historical process of formation of Russian tribes and dialects. In Russian (ask us if in doubt)
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