Dokumenty k istorii Slavi︠a︡novedenii︠a︡ v Rossii, 1850-1912 /
Academy of Sciences of the Union of Soviet Socialist Republics (Moscow). - Institute of Slavonic Studies.
Leĭkina-Svirskai︠a︡, V. R.
Grekov, Boris Dmitrievich,1882-1953.
Razumovskai︠a︡, L. V.
Moskva,
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