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  1. Wireless Telegraph Construction For Amateurs

    Yazar Bilinmiyor

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    Yazar Bilinmiyor
    Wireless Telegraph Construction For Amateurs
  2. The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co.
Also, Facts and General Information Relating to Pneumatic Despatch Tubes
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    Birney C. Batcheller
    The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co.
Also, Facts and General Information Relating to Pneumatic Despatch Tubes
  3. The Thompson-Houston System of Electric Lighting
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    H. T. Cory
    The Thompson-Houston System of Electric Lighting
  4. Printing Telegraphy... A New Era Begins
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    Edward E. Kleinschmidt
    Printing Telegraphy... A New Era Begins

  5. The Earliest Electromagnetic Instruments

    Robert A. Chipman

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    Robert A. Chipman
    The Earliest Electromagnetic Instruments

  6. Agricultural Implements and Machines in the Collection of the National Museum of History and Technology
Smithsonian Studies in History and Technology, No. 17

    John T. Schlebecker

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    John T. Schlebecker
    Agricultural Implements and Machines in the Collection of the National Museum of History and Technology
Smithsonian Studies in History and Technology, No. 17

  7. Mine Pumping in Agricola's Time and Later

    Robert P. Multhauf

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    Robert P. Multhauf
    Mine Pumping in Agricola's Time and Later
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