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Atkinson, J.

Telephony : a detailed exposition of the telephone exchange systems of the British post office : vol. 1, general principles and manual exchange systems / J. Atkinson. - London : Sir Isaac Pitman, 1948. - xii, 514 p. : ill. ; 25 cm.

Includes index.


Telephony

621.385 / ATT
Last Updated on September 15, 2019
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