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Manually operated valves for marine piping. Nominal pressures and diameters

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Refractories. Method of determination for strength under bending at elevated temperatures

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Photographic gelatine. Method of moisture determination

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Photographic gelatine. Method of determination of viscosity and viscosity decrease

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Photographic gelatine. Method of determination of melting temperature

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Photographic gelatine. Method of determination of jelly hardness

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