Investigations of raw material in hard-coal-mining - Microscopical examination of hard coal, coke and briquettes - Part 1: Terms, survey of processes and their applications— 7 стр.
Investigations of raw material in hard-coal-mining - Microscopical examination of hard coal, coke and briquettes - Part 2: Preparation of polished surface from lump material and particulate blocks— 4 стр.
Value management, value analysis, functional analysis, vocabulary - Part 1: Value analysis and functional analysis; German version EN 1325-1:1996— 7 стр.