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Invention of Temparature- Insensitive Quartz Oscillation Plate Enabling HIghly Stable Communications and Clocks, 1933
jpeg image of equation 1
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current | 06:34, 8 January 2016 | 2,362 × 236 (36 KB) | R1CUTQUARTZ (talk | contribs) | Invention of Temparature- Insensitive Quartz Oscillation Plate Enabling HIghly Stable Communications and Clocks, 1933<br /> jpeg image of equation 1 |
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