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General requirements for method of preparation of highly mineralized coal dust for analysis
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Zinc concentrates. Methods for determination of silicon dioxide
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Concentrated natural chalk. Method of sand content determination
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Petroleum asphalts. Determination of viscosity by vacuum capillary viscometer
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Carbonaceous materials for the production of aluminium. Determination of density by gas pycnometry (volumetric) using helium as the analysis gas. Solid materials
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