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Orožen, Franc (16)
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Orr & Smith (162)
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Orr Channel (1)
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Orr, J.W. (1)
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Orrstown (Pa.) (1)
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Orsini, Camillo (1)
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Orsini, Lisa (3)
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Orta, Bernardo de (1)
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Ortelius, Abraham (125)
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Ortelius, Abraham, 1527-1598 (615)
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Orthez (Pyrenees-Atlantiques, France) (1)
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Orthón River (Bolivia) (1)
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Ortiz Molina, Luis G. (2)
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Orvieto (Italy) (1)
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Orvieto Region (Italy) (2)
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Orwell (Vt.) (7)
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Osage (Iowa) (2)
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Osage City (Kan.) (2)
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