Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry. Part 2. Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives
State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 4. Reference levels for narrow-band masking noise
Rectangular iron all-cast moulding boxes having inside dimensions: length 1200; 1400 mm, width 900; 1000 mm, height from 200 to 400 mm. Construction and dimensions
€10
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