Effective - 28 Aug 1984
60.401. Missouri state coordinate system established. — The systems of plane coordinates which have been established by the National Ocean Survey/National Geodetic Survey, or its successors, for defining and stating the geographic positions or locations of points on the surface of the earth within the state of Missouri are hereafter to be known and designated as the "Missouri Coordinate System of 1927" and the "Missouri Coordinate System of 1983".
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(L. 1984 S.B. 479)