Columbia subject headings:
Tolstoy, Aleksey Nikolayevich, graf, 1883-1945.
Harvard subject headings:
Authors, Russian--20th century--Biography
Tolstoy, Aleksey Nikolayevich, graf, 1883-1945
Princeton subject headings:
Authors, Russian--20th century--Biography.
Tolstoy, Aleksey Nikolayevich, graf, 1883-1945.