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Water-tube boilers and auxiliary installations. Part 3. Design and calculation for pressure parts
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Explosive atmospheres. Part 35-2. Caplights for use in mines susceptible to firedamp. Performance and other safety-related matters
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Lamps for household use. Methods for determination of energy efficiency
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Semiconductor silicon, raw materials for its production and quartz. Methods of phosphorus determination
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Wiring accessory. Ring stamped cable terminals, with open tail, attached to conductor core and insulations. Construction and sizes
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