23171. All common boundaries and common corners of counties not adequately marked by natural objects or lines, or by surveys lawfully made, shall be definitely established by surveys made jointly by the surveyors of all the counties affected, and approved by the boards of supervisors of the counties, or by a survey made by the State Lands Commission, on application of the board of supervisors of any county affected.(Added by Stats. 1947, Ch. 424.)
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