You searched for: Subject Rivers Remove constraint Subject: Rivers Institution Harvard Remove constraint Institution: Harvard Data type Polygon Remove constraint Data type: Polygon Year 1820 Remove constraint Year: 1820
1820. Polygon features show the major lakes and wide sections of major rivers in China for the year 1820. Only the major rivers were included in the CHGI... CHGIS, Harvard Yenching Institute.
1820. polygon features showing the major lakes and river inlets in China for the year 1820 1820 Data CHGIS V4 contains spatial data for the entire terri...