File:PSM V56 D0677 The evolution of crooke's tube.png

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English: The evolution of Crooke's tube
Date
Source Popular Science Monthly Volume 56
Author Unknown authorUnknown author

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:PSM_V56_D0677_The_evolution_of_crooke%27s_tube.png

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1 April 1900Gregorian

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Date/TimeThumbnailDimensionsUserComment
current22:47, 8 November 2016Thumbnail for version as of 22:47, 8 November 20161,251 × 1,031 (62 KB)IneuwUser created page with UploadWizard