Table of Contents: Automatic telephone systems/

Cover Image

Automatic telephone systems/

Main Author:	Aitken, William
Format:	Book
Language:	English
Published:	London: Ernsy Benn limited, 1921-1924
Subjects:	Telephone

Table of Contents:

v.1. Circuits and apparatus as used in the public service
v.2. Auxlliary services and private and branch exchenges

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