Extension du jeu de caractères cyrilliques codés employé pour l'échange d'information bibliographique

Specifies a set of 42 graphic characters with their coded representations. Consists of a code table and a legend showing each graphic, its use, and its name. Explanatory notes are also included. These characters, together with characters in the basic Cyrillic set, constitute a character set for the international interchange of bibliographic citations, including their annotations, in the Cyrillic alphabet.