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Explosive atmospheres. Part 40. Requirements for process sealing between flammable process fluids and electrical systems
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Glass packaging. Vacuum lug finishes. Type 77 - regular
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Ring single-ended square spanners. Design and dimensions
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Automatic five-position nut cold upsetters. Parameters and dimensions. Norms of accuracy
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Safety in emergencies. Means of finding people in the logjam. General technical requirements
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