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ГОСТ 23433-79

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ГОСТ 23518-79

ГОСТ 23499-79

Материалы и изделия строительные звукопоглощающие и звукоизоляционные Классификация и общие технические требования
Sound-absorbing and sound-insulating building materials and products. Classification and general technical requirements

SKU: 3085 Category: GOST - State standards

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