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| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| Yuan |
| (yüän) (KEY) , river, 540 mi (869 km) long, rising in S Guizhou prov. and flowing generally NE to Donting lake, Hunan prov., SE China. Navigation above Changde is limited by rapids to small craft. The Yuan valley, a major north-south trade route, yields tungsten, iron ore, and tung yu (wood oil). |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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