Columbia subject headings:
Russian language--Lexicology.
Russian language--Study and teaching--Foreign speakers.
Russian language--Usage.
Harvard subject headings:
Russian language--Lexicology.
Russian language--Study and teaching--Foreign speakers.
Russian language--Usage.
Princeton subject headings:
Russian language--Lexicology.
Russian language--Study and teaching--Foreign students.
Russian language--Style.
Russian language--Usage.