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<p>[book 1] Copernicus. Galileo. Sir Isaac Newton. Humboldt. Sir William Herschel. Charles Darwin.--[book 2] Ernst Haeckel. Carl von Linnaeus. Thomas H. Huxley. John Tyndall. Alfred R. Wallace. John Fiske
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<br>Subjects: Scientists</div>
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Hubbard, Elbert, 1856-1915</div>
Internet Archive identifier