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Safety devices for protection against excessive pressure. Part 4. Pilot operated safety valves
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Threaded pipeline connections. Union passage crosses. Construction
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Basic environmental testing procedures. Part 2: Tests guidance for damp heat tests
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Arbor ends for mounting of countersinks during inverse undercutting. Design and dimensions
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System of standards on information, librarianship and publishing. Library and information services of the research library. Types, forms, and rules of services
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