Columbia subject headings:
Badmaev, P. A. (Petr Aleksandrovich), 1851-1919.
Russia--History--Nicholas II, 1894-1917.
Harvard subject headings:
Badmaev, P. A. (Petr Aleksandrovich), 1851-1919
Russia--History--Nicholas II, 1894-1917.
Princeton subject headings:
Badmaev, P. A. (Petr Aleksandrovich), 1851-1919.
Russia--History--Nicholas II, 1894-1917.