Construction materials and products for sound absorption and insulation. Classification and general technical requirements
Материалы и изделия строительные звукопоглощающие и звукоизоляционные. Классификация и общие технические требования |
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MISC International Convention 1992 Transboundary EffectsInternational Convention 1992 Transboundary … |
GGTN Resolution 79 of 12 31 98Approval of rules for the installation and safe … |
NPB 65-97Optical and Electronic Optical Detectors |