Columbia subject headings:
Nobility--Russia--Biography.
Nobility--Russia--Diaries.
Oleg Konstantinovich, Prince, son of K. R. (Konstantin Romanov), Grand Duke of Russia, 1892-1914--Diaries.
Oleg Konstantinovich, Prince, son of K. R. (Konstantin Romanov), Grand Duke of Russia, 1892-1914.
Romanov, House of--History--20th century--Sources.
Russia--History--Nicholas II, 1894-1917--Sources.
Harvard subject headings:
Princeton subject headings:
Diaries.
Nobility--Russia--Biography.
Nobility--Russia--Diaries.
Oleg Konstantinovich, Prince, son of K. R. (Konstantin Romanov), Grand Duke of Russia, 1892-1914--Diaries.
Oleg Konstantinovich, Prince, son of K. R. (Konstantin Romanov), Grand Duke of Russia, 1892-1914.
Romanov, House of--History--20th century--Sources.
Russia--History--Nicholas II, 1894-1917--Sources.