Kempgen's linguistic bibliography

This Linguistic Bibliography contains about 17.000 records relating to Slavic Linguistics and Slavic Culture with focus on East- and South Slavic Regions. The list of subjects is located here.

Your search for Efimov, A.I. provides 2 hits
1	M.V. Lomonosov i russkij jazyk. (K 250-letiju so dnja roždenija M.V. Lomonosova) Efimov, A.I. - Moskva, 1961
2	Istorija russkogo literaturnogo jazyka Efimov, A.I. - Moskva, Izdatel'stvo "Vysšaja škola", 1971, 294 p.

Kempgen's linguistic bibliography

M.V. Lomonosov i russkij jazyk. (K 250-letiju so dnja roždenija M.V. Lomonosova)

Istorija russkogo literaturnogo jazyka