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Cardiac valve prostheses. Part 1. General technical requirements and test methods
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Nature protection. Hydrosphere. General requirements for surface and underground water control against pollution by oil and oil products while supplying by pipe-line
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Plants for water final refinements of UF-400A type. Quality requirements of certified products
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Safety of machinery. Interlocking devices associated with guards. Principles for design and selection
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Safety of machinery. Electrical equipment of machines. Part 1. General requirements
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Best available techniques. Resources saving. The hierarchical order of waste treatment
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