Columbia subject headings:
Fourth Way (Occultism)
Uspenskiĭ, P. D. (Petr Demʹi︠a︡novich), 1878-1947--Interviews.
Harvard subject headings:
Occultism
Philosophy, Modern--Soviet Union--20th century.
Philosophy, Russian--20th century.
Uspenskiĭ, P. D. (Petr Demʹi︠a︡novich), 1878-1947--Interviews.
Princeton subject headings: