Columbia subject headings:
Alekseĭ Nikolaevich, Czarevitch, son of Nicholas II, Emperor of Russia, 1904-1918.
Filatov, Vasily Ksenofontovich, 1904?-1988.
Nicholas II, Emperor of Russia, 1868-1918--Assassination.
Nicholas II, Emperor of Russia, 1868-1918--Family.
Pretenders to the throne--Russia.
Princes--Russia--Biography.
Romanov, House of.
Russia--History--Nicholas II, 1894-1917.
Russia--Kings and rulers--Biography.
Harvard subject headings:
Alekseĭ Nikolaevich, Czarevitch, son of Nicholas II, Emperor of Russia, 1904-1918
Filatov, Vasily Ksenofontovich, 1904?-1988.
Nicholas II, Emperor of Russia, 1868-1918--Assassination.
Nicholas II, Emperor of Russia, 1868-1918--Family.
Pretenders to the throne--Russia.
Princes--Russia--Biography
Princeton subject headings:
Alekseĭ Nikolaevich, Czarevitch, son of Nicholas II, Emperor of Russia, 1904-1918.
Nicholas II, Emperor of Russia, 1868-1918--Assassination.
Pretenders to the throne--Russia.
Princes--Russia--Biography.