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| Utgitt
| New York : Int. Western Electric Company. inc , 1923
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| Omfang
| s. 637-649, [242]-258. : fig.
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| Opplysninger
| Over tittelen: Western Electric Company, inc. Engineering Dept. Reprint B-45-1 Oct. 1923. - Sætrykk av: The physical review; 2nd ser. vol. 21, no. 6, June 1923; 2nd ser. vol. 22, no. 3, Sept. 1923
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