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Low-voltage switchgear and controlgear. Part 6-1. Multiple function equipment. Transfer switching equipment
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Steel welded pipes for main gas-and-oil pipelines. Specifications
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Ferrotungsten. Methods for determination of tin content
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Industrial automation systems and integration. Product data representation and exchange. Part 14. Description methods. The EXPRESS-X language reference manual
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Environmental protection. Biological diversity. Criteria for evaluating rare and endangered species of animals, plantsand fungi
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