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Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants

High-voltage switchgear and controlgear - Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV (IEC 17C/848/CD:2022); Text in German and English

Industrial valves - Gearbox for valves

Industrial valves - Gearbox for valves

Self-supporting metal sheet for roofing, external cladding and internal lining - Product specification and requirements; German and English version FprEN 14782:2017

Self-supporting metal sheet for roofing, external cladding and internal lining - Product specification and requirements

Residential solid fuel burning appliances - Part 1: General requirements and test methods

Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components

Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components

Clinical investigation of medical devices for human subjects - Good clinical practice (ISO/DIS 14155:2024); German and English version prEN ISO 14155:2024

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