ISO 639-5:2008 "Codes for the representation of names of languages—Part 5: Alpha-3 code for language families and groups" is an international standard published by the International Organization for Standardization (ISO).
It was developed by ISO Technical Committee 37, Subcommittee 2, and first published on May 15, 2008.
As of the February 11, 2013, update to ISO 639-5, the standard defines 115 collective codes.
[2][3] The United States Library of Congress maintains the list of Alpha-3 codes that comprise ISO 639-5.
In 2006, the target publication date for the final standard was set at October 30, 2007.