CHGIS Version 4 : CITAS 1990 China Districts
- Administrative Regions (Districts) in the People's Republic of China, 1990. 1990 CITAS Data China in Time and Space [CITAS] datasets have been reprojected to match the CHGIS base datasets. Separate polygon GIS layers are provided for provinces, prefectures, and counties. See the CHGIS China Dimensions page for a full description of the CITAS datasets. V4 County layers include statistical data from the 1990 census! See Counties description for details. -- text from CHGIS v4 CD-ROM.
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