The ISO 3166-1 alpha-3 reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

ISO 3166-1 alpha-3

Why not sponsor a child for Christmas in 2008?
ISO 3166-1 alpha-3 is used in ISO/IEC 7501-1 for machine-readable passports.

For current codes see: 3166-1

Reserved Code Elements list

The following alpha-3 codes are subject to a transitional reservation:

The following three letter codes are subject to an indeterminate reservation, having been notified to the United Nations Secretary-General under the 1949 and/or 1968 Road Transport Conventions: The following alpha-3 code elements are subject to an exceptional reservation: For the time being, ISO 3166 MA has agreed not to use the following codes, taken from ISO/IEC 7501-1 (Machine readable travel documents), as alpha-3 country codes: