Showing 1 - 10 results of 10 for search '"telegraphy"', query time: 0.16s Refine Results
  1. 1
    Wire telegraphy.
    Published 1926
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    Government Document eBook
  2. 2
    Wire telegraphy.
    Published 1929
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  3. 3
    Elementary principles of radio telegraphy and telephony.
    Published 1918
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  4. 4
    Wire telegraphy; subcourse for company and communication officers.
    Published 1931
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  5. 5
    Multiplex telephony and telegraphy by means of electric waves guided by wires.
    Published 1911
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  6. 6
    Manual of military telegraphy for Signal Service, U.S. Army, embracing permanent and field lines.
    Published 1872
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  7. 7
    Ground telegraphy or T.P.S.; description and use of SCR-71 transmitter and SCR-72 amplifier in forward position communication work.
    Published 1918
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  8. 8
    Annual report of Acting Signal Officer of Army to Secretary of War, 1864.
    Published 1864
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  9. 9
    Annual report of Signal Officer of Army to Secretary of War, 1861.
    Published 1861
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  10. 10
    Annual report of Signal Officer of Army to Secretary of War, 1862.
    Published 1862
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