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DIN EN 20140-2:1993-05

Отменен
Acoustics; measurement of sound insulation in buildings and of building elements; part 2: determination, verification and application of precision data (ISO 140-2:1991); German version EN 20140-2:1993 — 12 стр.
ICS
91.120.20 Acoustics in building. Sound insulation / Акустика в зданиях. Звукоизоляция