Russian standards PDF
Petroleum asphalts. Determination of viscosity by vacuum capillary viscometer
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Machines for cutting out, cleaning, forming of ballast and repair of rail way bed. General technical requirements
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Feeds, compound feeds. Method for determination of aflatoxin B1
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Petroleum bitumens. Method of separation into four fractions
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Glass and glass products. Optical characteristics determination methods. Determination of colour coordinates
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