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Everett Dirksen / Old Right / Datum / U.S. National Geodetic Survey / Benchmark / Springfield / Illinois / Height Modernization / Illinois / Geography / Geodesy / Surveying / Cartography


East Hardin, IL River, Great Flood of 1993
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Document Date: 2010-03-09 11:16:42

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File Size: 2,81 MB

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