Acoustics. Determination of sound power levels of noise sources. Engineering methods for small, movable sources in reverberant fields. Comparison for hard-walled test rooms— 20 стр.
Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane— 40 стр.
Safety of machinery. Reduction of risks to health from Hazardous substances emitted by machinery. Principles and specifications for machinery manufacturers— 18 стр.
