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Brown coals, hard coals and anthracites. Rules for the application of the classification of coals by grades
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Petroleum and natural gas industries. Subsea production systems. Design of foundations with vacuum piles. General principles
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Lengthened twist drills with taper shank for working of light alloys. Design
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Road vehicles. Components of the fuel system for supply of compressed gaseous hydrogen (CGH2) or hydrogen/natural gas mix. Part 9. Pressure relief valve
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