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Shapefile
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oceans
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CHGIS, Version: 4. Cambridge, MA (USA): Harvard Yenching Institute, Jan 2007
Remove constraint Collection: CHGIS, Version: 4. Cambridge, MA (USA): Harvard Yenching Institute, Jan 2007
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1. China Coastline, 1820
1820. CHGIS, Harvard Yenching Institute. China Coastline, 1820 is a line theme representing the historical coastline of China for the year 1820. CHGIS, Harvard Yenching Institute.