GOST 23171-78

Carbon steel and unalloyed cast iron. Methods for determination of determination of silicon

Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for an essentially free field over a reflecting plane

Computer models and simulation. Validation basis

Laboratory medicine. Requirements for the competence of calibration laboratories using reference measurement procedures

Lamp controlgear. Part 2-3. Particular requirements for a.c. supplied electronic ballasts for fluorescent lamps

Concretes. General requirements for methods of determination of density, moisture content, water absorptions porosity and watertightness