Explosive atmospheres - Part 34: Application of quality systems for equipment manufacture (ISO/IEC DIS 80079-34:2009); German version prEN ISO/IEC 80079-34:2009
Explosive atmospheres - Part 34: Application of quality systems for equipment manufacture (ISO/IEC 80079-34:2011, modified); German version EN ISO/IEC 80079-34:2011— 60 стр.