Reference Information

AMS55: Handbook of Mathematical Functions (About) New!
With Formulas, Graphs, and Mathematical Tables

Countries
Countries of the World, with ISO Codes & other info.
Country Cross Reference
Cross reference between places and their related country.
States & Provinces
States and provinces in North America.
Telephone Area Codes
Telephone Area Codes in North America.
Missing Information Types
Codes used to represent missing information in other tables.