V6 1990 CITAS GBK Encoding
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下载链接：
https://doi.org/10.7910/DVN/T27RQO
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资源简介：
The CHGIS version of CITAS 1990 Counties, combines basic Population Census Variables with GIS Data County Level, released under agreement with CIESIN. Original Data Distributed by: SEDAC CIESIN URL: http://sedac.ciesin.columbia.edu/data/collection/cddc
创建时间：
2016-12-23
