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The New Horizontal Control Datum for North America: NAD 83
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1986
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Description:The redefinition and new adjustment of the North American Datum of 1983 (NAD 83) has been completed. The National Geodetic Survey (NGS) is developing information to assist users in adapting to the changes from the North American Datum of 1927 (NAD 27) to the NAD 83 horizontal reference system. These changes yield new coordinate values and a new reference datum which will affect all levels of geodetic surveying in addition to the U.S. Geological Survey's series of 7.5-minute topographic maps.
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Rights Information:CC0 Public Domain
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Compliance:Submitted
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