FIPS 10-4

The FIPS 10-4 standard, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, lists two-letter country codes that are used by the U.S. Government for geographical data processing in many publications, such as the CIA World Factbook. The standard is also known as DAFIF 0413 ed 7 Amdt. No. 3 (Nov 2003) and as DIA 65-18 (Defense Intelligence Agency, 1994, "Geopolitical Data Elements and Related Features").
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