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Core bits for core barrels. Types and main dimensions

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Reagents. Phthalic anhydride. Specifications

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Wood-protecting preparations. Container method testing way protective ability to wood-colouring and moulding fungus

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Chemical and laboratory glass. Technical specifications. Test methods

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Graphite. Methods for determination of copper

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Raremetallic concentrates. Spectral methods of the determination of alumina, barium, iron, calcium, silicon, magnum, niobium, tantalum, titanium, zirconium and chromium oxide

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