| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Gretna |
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| city (1990 pop. 17,208), seat of Jefferson parish, SE La., on the Mississippi River. A suburb of New Orleans, it produces marble, granite, chemicals, and food products. Founded in the early 19th cent. as Mechanicsham, Gretna merged with McDonoghville in 1913. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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