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| Utgitt
| [New York] : [International Western Electric Company] , [1924]
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| Omfang
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| Opplysninger
| Over omslagstittelen: Western electric company, inc. Engineering department. Repr. B-75-1, June 1924. - Særtrykk av: Paper abridgement to be published in Journal of the American Institute of Electrical Engineers
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