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