Benzene hydrocarbons and allied products. Chromatographic method of determination of main substance and impurities content in benzene, toluene and xylene
Information technology. Open systems interconnection. Procedures for the operation of OSI registration authorities. General procedures and tor arcs of the ANS. 1 object identifier tree
State system for ensuring the uniformity of measurements. Platinum, copper and nickel resistance thermometers. General technical requirements and test methods
