Shapefile of census tract boundaries in Chicago in 1920
收藏官方服务：
资源简介：
Shapefile of census tract boundaries in Chicago in 1920. File included in zip file include IL_tract_a.dbf, IL_tract_a.prj, IL_tract_a.sbn, IL_tract_a.sbx, IL_tract_a.shp, IL_tract_a.shp.xml, IL_tract_a.shx
创建时间：
2016-01-01
