Writing boards for educational institutions - Ergonomic, technical and safety requirements and their test methods; German version EN 14434:2004— 31 стр.
Writing boards for educational institutions - Ergonomic, technical and safety requirements and their test methods; German version EN 14434:2004, Corrigendum to DIN EN 14434:2005-03; German version EN 14434:2004/AC:2008— 2 стр.