State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 3. Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
Electrical steel. Methods of test for magnetic and electrical properties. Method for measurement of relative magnetic permeability and specific magnetic losses by a.c. bridge
Catalogization of products for federal state needs. The order of preparation and presentation of catalog data of exported products. Electronics data exchange. General principles
