ISO 639-5:2008 Preview
Codes for the representation of names of languages -- Part 5: Alpha-3 code for language families and groups
This standard was last reviewed and confirmed* in 2016.
*Therefore this version remains current
ISO 639-5:2008 provides a code consisting of language code elements comprising three-letter language identifiers for the representation of names of living and extinct language families and groups. Languages designed exclusively for machine use, such as computer-programming languages, are not included in this code.