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Description: Crookes vacuum tube, contains fluorspa, by F. E. Becker and Co., 34 Maiden Lane, London, WC, England. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: discharge tubes Source: Science Museum Creator: F.E. Becker and Co. Identifier: A629192 Go to resource More Like this...
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