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Installation, Operation and Maintenence Instructions for Model NM 16 Echo Sounding equipment. | Bok | Reol 4-D-2-B.
Submarine Signal Company / - Boston, 1939.. [Bok]. - 6 kapitler + plansjer. (UVmateriell.) - Språk: Engelsk | Submarine Signal Company | 1939. |
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Submarine signaling,fessenden oscillator skin type | Bok | Reol 2-A-6-E.
Submarine Signal Company / - Boston,USA, 19??. [Bok]. - 32 sider (Fessenden oscilator) - Språk: Norsk (bokmål) | Submarine Signal Company | 19?? |