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unknown - Public Domain
Paul Helbronner - Public Domain
United States Government - Public Domain
Harold George Dick - Public Domain
1920 - CC BY 4.0
author - Public Domain
Léon Joliot - Public Domain
Tuttle, Charles Richard - Public Domain
GabboT - CC BY-SA 2.0
Lithographie von Joseph Nikolaus Peroux nach einem Gemälde von Jakob Wilhelm Christian Roux - Public Domain
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:de:Benutzer:Eilmeldung - CC BY-SA 2.0
Markfan - CC BY-SA 3.0
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Uncredited - Public Domain
Hoyt, Helen
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Glendenin, Lawrence E. (Lawrence Elgin), 1918-2008
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unknown - Public Domain
Browning, Jonathan, 1805-1879
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Rossio, Terry
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Paul Helbronner - Public Domain
Esclangon, Ernest, 1876-1954
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Broglie, Albert de 1821-1901
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Compton, Arthur Holly, 1892-1962
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Cowley, Malcolm, 1898-1989
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Miller, John, 1861-1917
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United States Government - Public Domain
Dies, Martin, 1900-1972
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unknown - Public Domain
Bonney, Lores, 1897-
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Harold George Dick - Public Domain
Cunningham, Julian W. (Julian Wallace), 1893-1972
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1920 - CC BY 4.0
Braunfels, Walter, 1882-1954
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Bell, Thomas Hugh, Sir, 1844-1931
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Agger, Knud
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author - Public Domain
Crosby, Fanny, 1820-1915
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Jackson, Benjamin Daydon, 1846-1927
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Merle d'Aubigné, J. H. (Jean Henri), 1794-1872
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Léon Joliot - Public Domain
Lalo, Edouard, 1823-1892.
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Leigh, Egerton
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Tuttle, Charles Richard - Public Domain
Burt, William Austin, 1792-1858
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GabboT - CC BY-SA 2.0
Mcgregor, Ewan, 1971-
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Lithographie von Joseph Nikolaus Peroux nach einem Gemälde von Jakob Wilhelm Christian Roux - Public Domain
Creuzer, Georg Friedrich, 1771-1858
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Original uploader was :de:Benutzer:Pictor46 - Public Domain
Krummacher, Frederic Adolphus, 1767-1845
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Douglas, C.H. (Clifford Hugh), 1879-1952
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:de:Benutzer:Eilmeldung - CC BY-SA 2.0
Stolpe, Manfred
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Pelloe, Emily H
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Fulci, Lucio
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Markfan - CC BY-SA 3.0
Adamo, Salvatore, 1943-....
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Ranaldo, Lee