Cortina's Russian in 20 lessons : intended for self-study and for use in schools - Senn, Alfred, 1899-; Rozhdestvensky, Andrey A. (New York : R.D. Cortina Co.; distributors: Garden City Books, Garden City, N.Y., 1957)
First ed. published in 1951 under title: Cortina's Russian conversaphone.
Keywords: Russian language -- Conversation and phrase books