Telephony ; a comprehensive and detailed exposition of the theory and practice of the telephone art /
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| Format: | Book |
| Language: | English |
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Chicago :
American Technical Society,
[1922]
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| Item Description: | Published in 1912 by American school of correspondence, Chicago. |
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| Physical Description: | 4 pages ., 925, 18 pages : illustrations, diagrams ; 22 cm. |