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