Russian standards PDF
Electricity metering equipment (a.c). Particular requirements. Part 11. Electromechanical meters for active energy (classes 0,5; 1 and 2)
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Drinking water. Methods for determination of surfactants
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Load-bearing geophysical armoured cables. General specifications
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Drinking water. Determination of volatile halogenated organic compounds by gas chromatography
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Water quality. Detection and enumeration of Escherichia coli and coliform bacteria. Part 1. Membrane filtration method
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