Columbia subject headings:
Soviet Union--History--Revolution, 1917-1921--Naval operations.
Soviet Union--Politics and government--1917-1936.
Soviet Union. Voenno-Morskoĭ Flot. Baltiĭskiĭ flot.
Harvard subject headings:
Soviet Union--History--Revolution, 1917-1921--Naval operations.
Soviet Union--Politics and government--1917-1936.
Soviet Union. Voenno-Morskoĭ Flot. Baltiĭskiĭ flot.
Princeton subject headings:
Soviet Union--History--Revolution, 1917-1921--Naval operations.
Soviet Union--Politics and government--1917-1936.
Soviet Union. Voenno-Morskoĭ Flot. Baltiĭskiĭ flot