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... - Public Domain
PriscillaAnne - CC BY-SA 3.0
Public Domain
Joseph McCabe - Public Domain
Erling Mandelmann - CC BY-SA 3.0
DOI - Public Domain
The American University in Cairo - Public Domain
E. Temple Thurston - Public Domain
Unattributed - Public Domain
unknown - Public Domain
NA - Public Domain
:de:Emil Stumpp - Public Domain
Stephen Lewellyn - Public Domain
US Government - Public Domain
Ramsdell, George Allen - Public Domain
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Migne, J.-P. (Jacques-Paul), 1800-1875
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... - Public Domain
Bentham, Samuel, 1757-1831
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PriscillaAnne - CC BY-SA 3.0
McLean, Priscilla
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Public Domain
Prosser, William Farrand, 1834-1911
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Pietro, da Cortona, 1596-1669
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Jones, David C., 1921-2013
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Semple, Robert, 1873-1955
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Joseph McCabe - Public Domain
Clodd, Edward, 1840-1930
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Gromyko, Andreĭ Andreevich 1909-1989
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Alfaro, Ricardo J. (Ricardo Joaquín), 1882-1971
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Erling Mandelmann - CC BY-SA 3.0
Aga Khan, Sadruddin, Prince, 1933-
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Moore, Honor, 1945-....
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Farr, Sam
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DOI - Public Domain
Kempthorne, Dirk, 1951-
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The American University in Cairo - Public Domain
Watson, Charles R. (Charles Roger), 1873-1948
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Lindsay, Robert Burns, 1824-1902
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Dillenius, Johann Jakob, 1687-1747
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E. Temple Thurston - Public Domain
Thurston, E. Temple (Ernest Temple), 1879-1933
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Unattributed - Public Domain
Dett, R. Nathaniel, 1882-1943
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unknown - Public Domain
Lactantius, approximately 240-approximately 320
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NA - Public Domain
Chaudoir, M. de (Maximilien), baron, 1817-1881
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:de:Emil Stumpp - Public Domain
Baumeister, Willi, 1889-1955
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Stephen Lewellyn - Public Domain
Mentschikoff, Soia, 1915-....
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Marcello, Benedetto
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Tyng, Stephen H. (Stephen Higginson), 1800-1885
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Morison, Alexander, 1779-1866
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US Government - Public Domain
Heap, D. P. (David Porter), 1843-
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Gareis, Franz, 1775-1803
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Public Domain
Bayh, Birch, 1928-....
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Ramsdell, George Allen - Public Domain
Burns, Charles H. (Charles Henry)