Report copyright - CADASTRE SURVEY PRACTICE (SGHU 4323)...2018/11/13 · High-water mark of ordinary spring tides SEA BED [ X1,Y1, H1 ] [ X2,Y2, H1] [ X2,Y2, H2 ] [ X3,Y3, H1] [ X3,Y3, H2 ] [ X4,Y4,
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