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Brown coals, hard coals and anthracites. Classification by ranks and classes according to reflectance index of vitrinite
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Liquefied petroleum gases. Calculation of density and saturated vapour pressure
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Logging cable tips, sonde heads and logging tools heads. Types, main parameters, dimensions and technical requirements
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Chemical organic products. Determination of acidity and alkalinity
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Testing methods for chemicals of environmental hazard. Soil microorganisms: carbon transformation test
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