Title: Sovetskij podvodnyj flot, 1922-1945 gg (Neizvestnye vojny)
Subjects: Sous-marins, Histoire militaire, URSS. Voenno-morskoj flot, URSS, Forces sous-marines, Submarine forces, Submarines (Ships), Soviet Union. Voenno-Morskoĭ Flot, Soviet Union