Russian standards PDF
Switching surges protection devices of coal mines underground electrical networks
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Peat and products of its processing for agriculture. Method for determination of total content of calcium and magnesium carbon
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Peat and products of its processing for agriculture. Method for determination of hydrolytic acidity
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Peat and products of its processing for agriculture. Method for determination of mobile forms of potassium
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Manganese ores, concentrates and agglomerates. Method for determination of mass loss on ignition
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Automates for sale of post cards envelopes and post-stamps. General technical requirements
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