State system for ensuring the uniformity of measurements. Indicating pressure gauges. Ordinary measuring instruments. Metrological requirements and test methods
Power line communication apparatus and systems on low-voltage electrical installations in the frequency range 1.6 MHz to 30 MHz. Part 2-1. Residential, commercial and industrial environment. Immunity requirements
System of standards on information, librarianship and publishing. National rubricator for scientific and technical information. Structure, rules for use and maintenance
