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GOST (ГОСТ) 21.601-79SPDS. Water and sewer lines. Working drawingСПДС. Водопровод и канализация. Рабочие чертежи. |
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GOST (ГОСТ) 1759.0-87Bolts, screws, studs, and nuts. SpecificationsБолты, винты, шпильки и гайки. Технические условия. |
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