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Scientific American
December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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December 1887
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November 1887
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November 1887
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November 1887
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November 1887
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November 1887
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November 1887
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November 1887
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November 1887
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November 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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October 1887
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September 1887
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September 1887
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September 1887
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September 1887
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September 1887
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September 1887
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September 1887
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September 1887
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September 1887
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August 1887
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August 1887
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August 1887
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August 1887
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August 1887
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July 1887
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July 1887
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July 1887
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June 1887
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June 1887
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May 1887
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April 1887
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January 1887
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January 1887
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January 1887
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January 1887
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January 1887
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January 1887
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January 1887
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January 1887
Scientific American
January 1887
