American FactFinder is a source for American population, housing, economic, and geographic data, maintained by the U.S. Census Bureau
Census and Statistics Department The home page of the Department includes information in both Chinese and English on the department, Hong Kong statistics, press releases, products and services, statistical literacy and other related links.
FedStats Presents Fedstats, a Web site maintained by the Federal Interagency Council on Statistical Policy that offers access to statistics and information produced by over 70 U.S. governmental agencies. Lists the agencies. Provides regional statistics on agriculture, demographics and economics, crime, education, energy and the environment, health, labor, and national accounts.
National Bureau Statistics of China (中華人民共和國國統計局). An authoritative source maintained by the Bureau which covers monthly, quarterly, yearly and census statistics of China. Also provides Links to Provincial statistics.
The Encyclopedia of Mathematics This is an open access resource designed specifically for the mathematics community. The original articles are from the online Encyclopaedia of Mathematics, published by Kluwer Academic Publishers in 2002. With more than 8,000 entries, illuminating nearly 50,000 notions in mathematics, the Encyclopaedia of Mathematics was the most up-to-date graduate-level reference work in the field of mathematics.