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Welding production qualification system. Part 2. Welding personnel qualification. Rules
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Remote sensing data of the Earth from space. Terms and definitions
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System of standardized type structures of SSI aggregated complexes. General specifications
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Safety of transformers, reactors, power supply units and combinations thereof. Part 2-26. Particular requirements and tests for transformers and power supply units all for saving energy and other purposes
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Grinding wheels. Unbalanced masses and measurement method
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