TY JOUR TI Dualism of Approximation Principle in Linguadidactics KW Russian as a foreign language KW error correction KW graphic signs KW student activity KW conscious approach KW language norm KW interference JO Bulletin of Kemerovo State University. Series: Humanities and Social Sciences AU Golovaneva, M.A. PY 2020 IS 4 PB Kemerovo State University