| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Roosevelt, river, Brazil |
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| river, c.400 mi (640 km) long, NW Brazil. It was called the Rio da Dúvida [River of Doubt] until it was explored by Theodore Roosevelt in 1913. Renamed in his honor, it is occasionally called Rio Teodoro. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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