File:Siphon Recorder.pdf

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Siphon_Recorder.pdf(file size: 6.46 MB, MIME type: application/pdf)

Images scanned from Electricity in the Service of Man. Dr. Alfred Ritter von Urbanitzky Cassell & Company, London 1890

Title page shown in pdf. Loaded by Michael S P Lucas

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current22:17, 19 January 2017 (6.46 MB)Lucasmsp (talk | contribs)Images scanned from Electricity in the Service of Man. Dr. Alfred Ritter von Urbanitzky Cassell & Company, London 1890 Title page shown in pdf. Loaded by Michael S P Lucas

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