Indexed in Engineering Index 1930 p 1771 from Am Inst Elec Engrs -- J Sept 1930. (See also - n 9 Sept 1934 p 16-7 and 35, n 10 Oct p 17-8)
General toll switching plan
Telephone Engr
Telephone Engineer ; 38 , n 11
1934
3 pages
Article (Journal)
English
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A general switching plan for telephone toll service
Engineering Index Backfile | 1930
|A general switching plan for telephone toll service
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|A general switching plan for telephone toll service
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