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IEC 60721-3-7:1987 ed1.0

Заменен
Classification of environmental conditions - Part 3-7: Classification of groups of environmental parameters and their severities - Portable and non-stationary use — 59 стр.
IEC 60721-3-7:1987 ed1.0
Заменен
IEC 60721-3-7:1995 ed2.0
Действует