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No informado. - Public Domain
Unknown - Public Domain
Paul Keleher - CC BY 2.0
unknown - Public Domain
Fratelli Alinari - Public Domain
Arad Thomas - Public Domain
Mauro Bolognini - Public Domain
Public Domain
Georges Biard - CC BY-SA 3.0
…trialsanderrors - Public Domain
Julian Vannerson (1827-1875) - Public Domain
Mises Institute - CC BY-SA 3.0
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Playfair, W. H. (William Henry), 1790-1857
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No informado. - Public Domain
Alegría, Ciro, 1909-1967
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Unknown - Public Domain
Eberle, Abastenia St. Leger, 1878-
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Paul Keleher - CC BY 2.0
Carr, Howie
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Lee, T. D., 1926-
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Story, Julian, 1856-1919,
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Onslow, Georges
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Talbot, Isham, 1773-1837
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Rodríguez, Carlos Rafael 1913-
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Iosif, Ștefan O. (Ștefan Octavian), 1875-1913
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Distler, Hugo, 1908-1942
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Ehrenfest, Paul, 1880-1933
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unknown - Public Domain
Richards, Linda, 1841-1930
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Fratelli Alinari - Public Domain
Morphett, John, Sir, 1809-1892
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Arad Thomas - Public Domain
Hard, Gideon, 1797-1885
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Mauro Bolognini - Public Domain
Schiaffino, Rosanna, 1939-2009
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Public Domain
Hoste, D. E. (Dixon Edward), 1861-1946
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Georges Biard - CC BY-SA 3.0
Coppola, Sofia, 1971-....
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Wright, Chauncey, 1830-1875
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Walpole, Hugh, 1884-1941
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…trialsanderrors - Public Domain
Fealy, Maude, 1881-1971
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Julian Vannerson (1827-1875) - Public Domain
Clark, Ezra, 1813-1896
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Public Domain
Rojas, Fernando de, -1541
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Penny, Timothy J.
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Ross, John, 1790-1866
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unknown - Public Domain
Jackson, James Streshly, 1823-1862
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Rosenthal, Arthur, 1887-1959
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Cameron, Archibald, 1707-1753
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Mises Institute - CC BY-SA 3.0
Higgs, Robert
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Acton, John Francis Edward, 1736-1811