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Agricultural products, raw materials and food with improved environmental characteristics. Mineral fertilizers. Method of measurement of lead, cadmium, arsenic, nickel, mercury, chromium (VI), copper, zinc and biuret

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Instrument for separation of arsenic in steels, casts irons and alloys. Specifications

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Forestry machinery. Gasoline chain saws. Protection at front and rear handles. Dimensions and strength

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Wheat. Determination of vitreousness by optical-computer method

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Hydroelectric power plants. Hydrotechnical structures. Underwater technical survey of hydraulic structures and adjoining areas of unstrengthened channel. Norms and requirements

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Low voltage distribution systems up to 1000 V a. c. and 1500 V d. c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 3. Loop impedance

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