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Longwall powered roof chocks. Basic parameters. General technical requirements. Test methods

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Explosive atmospheres. Part 13. Equipment protection by pressurized room 'p'

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Explosive atmospheres. Part 28. Protection of equipment and transmission systems using optical radiation

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Explosive atmospheres. Part 33. Equipment protection by special protection 's'

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Wheel sets for the special-purpose rolling stock. General specifications

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Water. Methods for determination of alkalinity and mass concentration of carbonates and hydrocarbonates

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