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| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| El Dorado, city, United States |
( l d r ´d) (KEY) , city (1990 pop. 23,146), seat of Union co., S central Ark; inc. 1845. The discovery of oil in 1921 made it the oil center of the state. The city has oil refineries, chemical plants, and poultry-packing houses, as well as diverse manufactures. |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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