Telephone switchboard operator; instructors guide for all arms

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090 ‡aTK6391 ‡b.U51 1923
035 ‡a(OCoLC)6336295
110 1 ‡aUnited States. ‡bArmy. ‡bSignal Corps.
245 1 0 ‡aTelephone switchboard operator; ‡binstructors guide for all arms.
260 ‡aWashington, ‡bGov't print. off., ‡c1923.
300 ‡a266 p. ‡billus.
490 0 ‡aUnited States army training manual ‡vno. 23.
538 ‡aMode of access: Internet.
CID ‡a101744470
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DAT 1 ‡a20161104090546.0 ‡b2023-12-25T19:06:16Z
DAT 2 ‡a2023-12-25T18:30:02Z
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