DIN EN 60721-3-0:1994 Classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; introduction (IEC 60721-3-0:1984 + A1:1987); German version EN 60721-3-0:1993
2021DIN EN IEC 60721-3-0:2021 Classification of environmental conditions - Part 3-0: Classification of groups of environmental parameters and their severities - Introduction (IEC 60721-3-0:2020); German version EN IEC 60721-3-0:2020
1994DIN EN 60721-3-0:1994 Classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; introduction (IEC 60721-3-0:1984 + A1:1987); German version EN 60721-3-0:1993