Columbia subject headings:
Psychologists--Soviet Union--Biography.
Psychology--Soviet Union--History.
Vygotskiĭ, L. S. (Lev Semenovich), 1896-1934.
Harvard subject headings:
Psychologists--Russia.
Psychologists--Soviet Union--Biography
Psychology--Soviet Union--History
Vygotskiĭ, L. S. (Lev Semenovich), 1896-1934
Princeton subject headings:
Psychologists--Soviet Union--Biography.
Psychology--Soviet Union--History.