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IEC 60721-3-4:1987 ed1.0

Заменен
Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Stationary use at non-weatherprotected locations — 43 стр.
IEC 60721-3-4:1987 ed1.0
Заменен
IEC 60721-3-4:1995 ed2.0
Заменен
IEC 60721-3-4:2019 ed3.0
Действует