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Tube connections and fittings. Connecting threads. Series
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Refractory articles. Methods of damage depth measuring of angles and rihs
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State system for ensuring the uniformity of measurements. The state special standard and all-union verification schedule for means of measurements of the difference of pressures up to 4x10 in 4 degree Pa
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Automatic electrical controls for household and similar use. Part 2-11. Particular requirements for energy regulators
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