Columbia subject headings:
Emperors--Russia--Biography.
Peter I, Emperor of Russia, 1672-1725--Travel.
Russia--History--Peter I, 1689-1725.
Harvard subject headings:
Emperors--Russia--Biography
Peter I, Emperor of Russia, 1672-1725--Travel.
Russia--History--Peter I, 1689-1725.
Princeton subject headings:
Emperors--Russia--Biography.
Peter I, Emperor of Russia, 1672-1725--Travel.
Russia--History--Peter I, 1689-1725.