Columbia subject headings:
Russian language--Composition and exercises.
Russian language--Conversational Russian.
Russian language--Textbooks for foreign speakers.
Harvard subject headings:
Russian language--Composition and exercises.
Russian language--Conversational Russian.
Russian language--Textbooks for foreign speakers.
Princeton subject headings:
Russian language--Composition and exercises.
Russian language--Conversational Russian.
Russian language--Textbooks for foreign speakers.