Columbia subject headings:
Philosophers--Soviet Union--Biography.
Uspenskiĭ, P. D. (Petr Demʹi︠a︡novich), 1878-1947.
Harvard subject headings:
Biographies
Philosophers--Soviet Union--Biography
Uspenskiĭ, P. D. (Petr Demʹi︠a︡novich), 1878-1947
Princeton subject headings:
Philosophers--Soviet Union--Biography.
Uspenskiĭ, P. D. (Petr Demi︠a︡novich), 1878-1947.