Revision history of "Phonautogram"

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  • (cur | prev) 15:35, 9 December 2012Dan Tobias (Talk | contribs)‎ . . (+1,054)‎ . . (Created page with "{{FormatInfo |formattype=physical |released=1857 }} The '''phonautogram''', or phonautograph tracing, was a method used to transcribe sound waves onto paper using a devic...")
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