AS NZS 2632.3:2015 pdf free.Codes for the representation of names of countries and their subdivisions Part 3: Code for formerly used names of countries.
4 Principles for inclusion in the list of formerly used country names
4.1 Source of the list
The list of formerly used country names in this part of
ISO 3166 is exclusively derived from the 1974, 1981,
1988, 1993, and the editions ISO 3166-1:1997,
ISO 3166-1:2006, and ISO 3166-1:2013.
4.2 Categorization of reasons for inclusion
4.2.1 General
Country names which have been removed from the
1974, 1981, 1988, 1993, ISO 3166-1:1997, ISO 3166-
1:2006, and ISO 3166-1:2013 editions are included in this release of ISO 3166-3 if one of the conditions given in 4.2.2 to 4.2.5 applies.
4.2.2 Change of country name
The significant part of a country name, which forms the basis for allocating the country code element in ISO 31 66-1, is changed in such a way that no visual association between the new country name and the formerly used country code element is possible or could be misleading.
EXAMPLE BURMA (BU) name changed to MYANMAR (MM) in 1989.
4.2.3 Division of country
A country, dependency or other area of particular geopolitical interest in the list of ISO 3166-1 is divided into two or more new countries, dependencies or other areas of geopolitical interest.
EXAMPLE CZECHOSLOVAKIA (CS) was divided into the CZECH REPUBLIC (CZ) and SLOVAKIA (SK) in 1993.
4.2.4 Merger of countries
Two or more countries, dependencies or other areas of particular geopolitical interest in the list of
ISO 3166-1 merge into one new country, dependency or other area of particular geopolitical interest. In this process, the name of at least one of the countries, dependencies or other areas of particular geopolitical interest becomes a formerly used country name.
EXAMPLE 1 YEMEN, DEMOCRATIC (YD) and YEMEN
ARAB REPUBLIC (YE) merged into YEMEN, REPUBLIC
OF (YE) in 1990 (change of both country names).
EXAMPLE 2 GERMAN DEMOCRATIC REPUBLIC (DD) united with GERMANY, FEDERAL REPUBLIC OF (DE) in 1990 (removal of one country name).
NOTE If the new country name allows no visual association with one of the formerly used code elements, a new code element will be assigned.
4.2.5 Obsolescence of country name
The area denominated by a country name is absorbed by neighbouring countries and the country name ceases to be used.
EXAMPLE NEUTRAL ZONE (NT); the name was deleted in 1993. The area is now absorbed into IRAQ (IQ) and SAUDI ARABIA (SA).
4.3 Provisions for sequencing within the list
The list of formerly used country names established in this part of ISO 3166 is arranged in alphabetical order of the short names under which the countries, dependencies or other areas of particular geopolitical interest were included in the different editions of ISO 3166 and in ISO 3166-1.AS NZS 2632.3 pdf download.