Normas ISO

Dense shaped refractory products -- Determination of resistance to sulfuric acid

Chromium ores and concentrates -- Determination of aluminium content -- Complexometric method

Information processing systems -- Data communications -- Use of the X.25 packet level protocol in local area networks

ISO 8879:1986/Amd 1:1988

Information processing -- Text and office systems -- Standard Generalized Markup Language (SGML)

Information technology -- Telecommunications and information exchange between systems -- Use of X.25 to provide the OSI Connection-mode Network Service