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Bitumens and bituminous binders. Characterization of perceptible properties
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Bismuth concentrate. Methods for determination of copper
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Petroleum and natural gas industries. Drilling and production equipment. Subsurface barrier valves and related equipment. General technical requirements
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Petroleum products. Determination for pour point. Automatic pressure pulsing method
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Solid biofuels. Fuel quality assurance. Part 2. Wood pellets for non-industrial use
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