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unknown - Public Domain
Halleypo - Public Domain
Stiizd - CC BY-SA 3.0
Lucassian - CC BY-SA 3.0
Carl Størmer - CC BY-SA 3.0
picturespider.com - Public Domain
U.S. Air Force - Public Domain
NASA - Public Domain
not stated - Public Domain
Olairian - Public Domain
XalD -
Nv8200p - CC BY-SA 3.0
Agence Rol - Public Domain
unknown - CC BY-SA 4.0
Linda_Bisset - CC BY 2.0
Non crédité - Public Domain
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unknown - Public Domain
Khorana, Har Gobind, 1922-2011
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Halleypo - Public Domain
Visconti, Eliseu, 1866-1944
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Laennec, R. T. H. (René Théophile Hyacinthe), 1781-1826
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Blank, Les
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unknown - Public Domain
Armstrong, Samuel Turell, 1784-1850
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Stiizd - CC BY-SA 3.0
Cabral, Manuel del, 1907-1999
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Gottlieb, Maurycy, 1856-1879
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Lucassian - CC BY-SA 3.0
Taniguchi, Yoshio, 1937-....
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Hanbury Williams, Charles, Sir, 1708-1759
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Lewis, David Peter, 1820-1884
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Hyde, Thomas, 1636-1703
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Carl Størmer - CC BY-SA 3.0
Geelmuyden, H. (Hans), 1844-1920
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picturespider.com - Public Domain
Müller, Georg Elias 1850-1934
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Wallace, Richard, 1894-1951
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unknown - Public Domain
Benteen, Frederick William, 1834-1898
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U.S. Air Force - Public Domain
Talbott, Harold E., 1888-1957
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NASA - Public Domain
Dryden, Hugh L. (Hugh Latimer), 1898-1965
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not stated - Public Domain
Parker, Lottie Blair
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Olairian - Public Domain
Jarvis, Anna, 1864-1948
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XalD -
Chipasula, Frank Mkalawile
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Nv8200p - CC BY-SA 3.0
O'Brien, Tim, 1946-....
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Haggin, James Ben Ali, 1822-1914
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Smith, R. T. (Robert T.)
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Agence Rol - Public Domain
Montero Ríos, Eugenio, 1832-1914
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unknown - CC BY-SA 4.0
Hayslip, Le Ly
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Linda_Bisset - CC BY 2.0
Gábor, Eva, 1921-1995.
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Bridges, George William
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Non crédité - Public Domain
Salinger, Conrad
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Keller, Marthe
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Ki, Tomonori