About World Factbook
UT Southwestern Medical Center Library
Prepared by the Central Intelligence Agency for the use of U.S. Government. Provides "essential elements of basic intelligence on all areas of the world." Information provided by the Bureau of the Census (Department of Commerce); Bureau of Labor Statistics (Department of Labor); Central Intelligence Agency; Defense Intelligence Agency (Department of Defense); National Imagery and Mapping Agency (Department of Defense); Office of Naval Intelligence (Department of Defense); US Board on Geographic Names (Department of the Interior), and others.