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Panel Type Machine Switching : E.H. Goldsmith : Free Download, Borrow, and Streaming : Internet Archive

  • ️Tue Aug 30 2016

Introduction to the automatic switching of telephone calls by the panel system. Published for New York Tel & Tel in 1926. 

Addeddate
2016-08-30 06:14:43
Identifier
GoldsmithPanelMachineSwitching1926GoodScan
Identifier-ark
ark:/13960/t11p2z81p
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ABBYY FineReader 11.0
Ppi
300
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Internet Archive HTML5 Uploader 1.6.3
Year
1926

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Uploaded by endlesstemple on August 30, 2016