Electrical installations of buildings. Part 4. Protection for safety. Chapter 44. Protection against overvoltages. Section 442. Protection of low-voltage installations against faults between high-voltage systems and earth
Connecting devices. Safety requirements for screw-type and screwless-type clamping units. Part 2. Particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 (included)
State system for ensuring the uniformity of measurements. Certified reference materials of natural gas magistral and substitute natural gas. Procedure of determining the metrological characteristics
Methods for studying the effects of chemicals on the human body. In Chemico Skin Sensitisation. Methods based on key events in the pathway of adverse outcomes in covalent binding to proteins
