Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for small movable sources in reverberant fields. Part 1. Comparison method for a hard-wall test room
Explosive atmospheres. Rules of conformity assessment of quality management systems of service facilities providing installation and initial inspection of Ex installations for use in explosive atmospheres
Carbonaceous materials used in the production of aluminium. Prebaked anodes and cathode blocks. Part 1. Determination of bending/shear strength by a three-point method