Robert Koch 1843-1910 #8
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Hooke's Micrographia
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Microscope, 1889 #1
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Microscope, 1889 #2
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Microscope, C1943
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Silent Still: Laboratories #8
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Jane Cooke Wright
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Hooke: Microscope, 1665
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Binocular Microscope
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Leeuwenhoek: Microscope
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Galileos Microscope
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Leeuwenhoek: Microscope #1
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Hooke: Microscope, 1665 #1
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Robert Hookes Microscope
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Robert Hookes Microscope #1
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Florence Sabin (1871-1953) #2
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Elie Metchnikoff (1845-1916)
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Florence Rena Sabin
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Hms Challenger Scientists
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ANTON van LEEUWENHOEK #1
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Medicine: Parasitology
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Robert Koch (1843-1910) #9
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Elie Metchnikoff (1845-1916) #2
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Infertility Clinic, 1956 #1
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Constellation: Sagittarius
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Sir Alexander Fleming
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Silent Still: Laboratories #4
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Pearl White (1889-1938) #8
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Achromatic Mircoscope
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Hms Challenger Scientists #1
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Louis Pasteur (1822-1895) #9
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Scientific Instruments, 1890
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Louis Pasteur (1822-1895) #15
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Ilya Ilich Mechnikov (1845-1916) #1
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Louis Pasteur (1822-1895) #17
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Robert Andrews Miillikan (1868-1953)
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High School Class, C1936
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Alan Hodgkin (1914-1998)
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Howard University, C1900 #4
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Religious Outlook, 1883
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Charles Richard Drew
Betsy Graves Reyneau