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| Utgitt
| New York : Int. Western Electric Company , 1924
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| Omfang
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| Opplysninger
| Over tittelen: Western electric company, inc. Engineering dept. Repr. B-77-1, June 1924. - Særtrykk av: Journal of optical Society of America and review of scientific instruments; v. 8(1924)no. 5
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| Emner
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