To provide a quantitative measure of the input resolution of administrative units used for GPWv3.

To provide a set of coastlines consistent with GPWv3 raster data for cartographic purposes.

To provide a vector (point) version of the input administrative units used in GPWv3 for use in data integration.

To provide county-level social information of China in a series of tables from the China Provincial Economic Yearbook data for 1990 and 1991.

To provide fundamental GIS maps of China, and neighboring countries and regions.

To provide information of geographical locations, areas, administrative division codes, and names for the administrative regions of China.

To provide information on the geographical locations, areas, administrative division codes, and names of the administrative regions of China.

To provide county and state boundary data for the U.S.

To provide an authoritative boundary layer for the geographies associated with the Public Use Micro Sample (PUMS) data files.

To provide an urban place GIS coverage of Mexico.