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Occupational safety standards system. Personal protective means for respiratory system. Method for determination of breath air temperature
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Occupational safety standards. Respiratory system protective devices. Recommendations for selection, use and maintenance
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Occupational safely standards system. Closed-circuit breathing apparatus compressed air type. Requirements, testing, marking. Simples selection rules
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Programmable hearing aids. Specification of a digital interface devices. Dimensions of electrical connectors
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Resources saving. Waste treatment. Management related terms and definitions
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