Occupational safety standards system. Personal respiratory protective means. Self-contained open-circuit compressed air breathing apparatus incorporating a hood for escape. Technical requirements. Test methods. Marking
United power system and isolated power systems. Information model of power industry. Information model profile of relay protection and automation devices
State system for the uniformity of measurements. State verification schedule for means measuring radionuclide activity, specific radioactivity, flux and flux density of б-, в-particles and photons of radionuclide sources
€25
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