Alexander Von Humboldt, Prussian
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Dr. Louis Leakey
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John Muir, Scottish-american Naturalist
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Alfred Russel Wallce, Welsh Naturalist
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John Muir, Naturalist
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Theodore Roosevelt, 26th American #3
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Slave Trader Surrenders To Baker, 1869
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Naturalists
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Charles Robert Darwin, English #7
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The Descent Of Man, Ernst Haeckel, 1871
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Theodore Roosevelt, 26th American #1
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Mikhail Lomonosov #2
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Charles Darwin By Julia Margaret
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Pliny The Elder, Ancient Roman
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Gustave Flaubert, French Author #1
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Étienne Saint-hilaire, French Naturalist
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Georges Cuvier, French Naturalist #2
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Charles Darwin, English Naturalist, 1881 #1
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Georges Louis Leclerc, French Naturalist #1
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Ernst Haeckel Naturalist And Artist
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Alfred Russel Wallace, Welsh Naturalist #2
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Georges Cuvier, French Naturalist #1
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Georges Cuvier, French Naturalist #5
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Pierre Belon, French Naturalist
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Jean-baptiste Lamarck, French Naturalist #1
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John Burroughs, American Naturalist #1
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Étienne Saint-hilaire, French Naturalist #1
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Lewis Dyche, American Naturalist
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Charles Darwin, English Naturalist
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Charles Darwin, English Naturalist #2
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Bernard De Jussieu, French Naturalist #1
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John Ray, English Naturalist
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Comte De Buffon, French Naturalist
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Georges Cuvier, French Naturalist
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Georges Louis Leclerc, French Naturalist
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Alfred Russel Wallace, Welsh Naturalist
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Edward Forbes, Manx Naturalist
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Alfred Russel Wallace, Welsh Naturalist #1
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Georges Cuvier, French Naturalist #3
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Alfred Russel Wallace, Welsh Naturalist #3
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Georges Cuvier, French Naturalist #4
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Pierre Belon, French Naturalist #1
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Pierre Belon, French Naturalist #2
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Jean-baptiste Lamarck, French Naturalist
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Charles Darwin, English Naturalist, 1881
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John Burroughs, American Naturalist
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Alfred Russel Wallace, Welsh Naturalist #4
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Alfred Russel Wallace, Welsh Naturalist #5
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Charles Darwin, English Naturalist, 1881 #2
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Joseph Banks, English Naturalist
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Georges Cuvier, French Naturalist #6
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Samuel Haldeman, American Naturalist
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Edward Forbes, Manx Naturalist #1
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Jean-baptiste Lamarck, French Naturalist #2
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Edward Forbes, Manx Naturalist #2
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Étienne Saint-hilaire, French Naturalist #2
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Charles Darwin, English Naturalist
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Charles Darwin, English Naturalist #1
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Charles Darwin, English Naturalist #2
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Charles Darwin, English Naturalist #3
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Charles Darwin, English Naturalist #1
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Ernst Haeckel, Naturalist And Artist #1
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Charles Darwin, English Naturalist #3
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Ernst Haeckel, Naturalist And Artist
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Ernst Haeckel, Naturalist And Artist #2
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Bernard De Jussieu, French Naturalist
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Georges Cuvier, French Naturalist #7
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Maria Merian, German Naturalist
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Francesco Redi, Italian Naturalist
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Charles Darwin, English Naturalist #4
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John Burroughs, American Naturalist
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Louis Agassiz, Swiss-american Naturalist
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