IPUMS National Historic GIS- The National Historical Geographic Information System (NHGIS) provides easy access to summary tables and time series of population, housing, agriculture, and economic data, along with GIS-compatible boundary files, for years from 1790 through the present and for all level...
(autonomous system boundary router) availability / 可用性AXFR / 完整区域传送(full zone transfer)Audio sound / 声音animation / 动画aid / 援助,帮助algorithm / 算法access layer / 接入层AARP / AppleTalk地址解析协议AARPprobepackets / AARP探测包access link / 接入链接access method / 访问方法access rate...
urban-and-regional-planning-resources / Latest commit Cannot retrieve latest commit at this time. History History File metadata and controls Code Blame 86.9 KB Raw View raw (Sorry about that, but we can’t show files that are this big right now.)...