Columbia subject headings:
Soviet Union--History, Naval.
Soviet Union. Voenno-Morskoĭ Flot--Submarine forces.
Submarine captains--Soviet Union--Biography.
World War, 1939-1945--Naval operations--Submarine.
Harvard subject headings:
Soviet Union--History, Naval.
Soviet Union. Voenno-Morskoĭ Flot--Submarine forces.
Submarine captains--Soviet Union--Biography.
World War, 1939-1945--Naval operations--Submarine.
Princeton subject headings: