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  • (cur | prev) 10:05, 19 July 2019Bleridon (talk | contribs). . (287 bytes) (+287). . ([P1] Chilowsky CM, Langevin MP. "Procédés et appareils pour la production de signaux sous-marins dirigés et pour la localisation à distance d’obstacles sous-marins"- "Production of submarine signals and the location of submarine objects" - French...)