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BS EN 20140-9:1994

Заменен
Acoustics. Measurement of sound insulation in buildings and of building elements, Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it — 16 стр.
BS EN 20140-9:1994
Заменен
BS EN ISO 10848-2:2006
Заменен
BS EN ISO 10848-2:2017
Действует