Codes for the representation of names of countries and their subdivisions — Part 3: Code for formerly used names of countries
代表国家及其分部名称的代码 - 第3部分:以前用于国家名称的守则
This document specifies basic guidelines for the implementation and maintenance of codes for formerly used names of countries.
This code is intended to represent non-current country names, i.e. the country names deleted from ISO 3166 since its first publication in 1974.