Columbia subject headings:
Authors, Russian--20th century--Biography.
Biographies.
Bulgakov, Mikhail, 1891-1940.
Harvard subject headings:
Authors, Russian--20th century--Biography
Biographies.
Bulgakov, Mikhail, 1891-1940
Princeton subject headings:
Authors, Russian--20th century--Biography.
Bulgakov, Mikhail, 1891-1940.