File:Fig.1~Fig.12 and Koga's biography.pdf
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Fig.1~Fig.12_and_Koga's_biography.pdf (file size: 8.49 MB, MIME type: application/pdf)
Invention of Temperature-Insensitive Quartz Oscillation Plate Enabling Highly Stable Communications and Clocks, 1933: PDF file for figures used in the proposal and Koga'S short biography.
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current | 00:43, 11 January 2016 | (8.49 MB) | R1CUTQUARTZ (talk | contribs) | Invention of Temperature-Insensitive Quartz Oscillation Plate Enabling Highly Stable Communications and Clocks, 1933: PDF file for figures used in the proposal and Koga'S short biography. |
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