Columbia subject headings:
Piotrovskiĭ, B. B. (Boris Borisovich), 1908-1990.
Harvard subject headings:
Art museum directors--Soviet Union--Biography.
Gosudarstvennyĭ Ėrmitazh (Russia)--Biography.
Piotrovskiĭ, B. B. (Boris Borisovich), 1908-1990
Princeton subject headings:
Piotrovskiĭ, B. B. (Boris Borisovich), 1908-1990.