Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs in workplaces and public areas (ISO 3864-1:2002 modified)— 32 стр.
Dry-type transformers 50 Hz, 100 up to 2500 kVA; general requirements and requirements for transformers U<(Index)m> up to 24 kV; German version of HD 538 S1:1992— 11 стр.