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Vegetable tanning extracts. Methods of determination

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Technical hexachlorethane. Specifications

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Reagents. Sodium thiosulphate 5-aqueous. Specifications

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Peat and products of its processing for agriculture. Method for determination of mobile forms of potassium

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Petroleum and natural gas industries. Plate-type heat exchangers. Technical requirements

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Casing and tubing steel pipes for the oil and gas industry. Procedures of thread connection testing

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