Columbia subject headings:
Harvard subject headings:
Russia (Federation). Voenno-Morskoĭ Flot--History--20th century.
Russia--History, Naval--20th century.
Soviet Union--History--Revolution, 1917-1921--Naval operations.
Princeton subject headings:
Russia (Federation). Voenno-Morskoĭ Flot--History--20th century.
Russia--History, Naval--20th century.
Soviet Union--History--Revolution, 1917-1921--Naval operations.