Wooden outside doors for residential and public buildings. Types, design, and dimensions
Двери деревянные наружные для жилых и общественных зданий. Типы, конструкция и размеры |
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GOST 22667-82Combustible natural gases. Methods to calculate … |
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GOST 12.4.059-78SSBT. Occupational Safety Standards System. … |
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GOST 12.3.019-80SSBT. Occupational Safety Standards System. … |