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Petroleum products. Fuels (class F).Classification. Part 3. Family L (liquefied petroleum gases)
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Surface-active substances. Method of determination of free polyethylene glycol and an active substance in nonionic surface-active substances
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Petroleum bitumens. Method for determination of paraffin content
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Solid biofuels. Fuel specifications and classes. Part 5. Firewood for non-industrial use
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