[David E. Hughes, biographical materials] 1987-

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[David E. Hughes, biographical materials] 1987-

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Hughes, David Edward, 1829-1900

http://n2t.net/ark:/99166/w6mg9g1w (person)

Anglo-American electrician and inventor of the carbon microphone. From the description of David E. Hughes letters, 1889-1890. (Unknown). WorldCat record id: 80218399 ...