100 Years of Telephone Switching (1878-1978: PART 1: MANUAL AND ELECTROMECHANICAL SWITCHING)

100 Years of Telephone Switching (1878-1978: PART 1: MANUAL AND ELECTROMECHANICAL SWITCHING) image
ISBN-10:

0444862897

ISBN-13:

9780444862891

Released: Jan 01, 1982
Format: Hardcover, 2 pages
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Description:

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