Title: Submarine warriors
Subjects: World War, 1914-1918, Submarine, World War, 1939-1945, Naval operations, Submarine captains, Biography, World War (1914-1918) fast (OCoLC)fst01180746, Kapitän, Geschichte 1914-1945, Geschichte (1914-1945), Unterseeboot, Naval Military operations, World War (1939-1945) fast (OCoLC)fst01180924, Unterseebootkrieg, Biographie