Columbia subject headings:
Bunin, Ivan Alekseevich, 1870-1953--Philosophy.
Bunin, Ivan Alekseevich, 1870-1953--Religion.
Harvard subject headings:
Bunin, Ivan Alekseevich, 1870-1953--Philosophy.
Bunin, Ivan Alekseevich, 1870-1953--Religion.
Princeton subject headings:
Bunin, Ivan Alekseevich, 1870-1953--Philosophy.
Bunin, Ivan Alekseevich, 1870-1953--Religion.