International Electrotechnical Commission
IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV; Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations - Ed.2.2 - IEC 2002
IEC 60721-3-3:1994+AMD1:1995+AMD2:1996 CSV; Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations - Ed.2.2 - IEC 2002
