Russian standards PDF
Moulding sands. Method for determination of sand grains shape
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Moulding sands. Methods for determination of clayey fraction
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Moulding sands. Methods for determination of medium size of seed and coefficient of homogeneity
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Moulding sands. Methods for determination of calcium oxide
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Rolling bearings. Single direction angular contact ball bearings with the contact angle 60 grades. Specifications
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Single row thrust short cylindrical roller bearings without rings. Specifications
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