State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means measuring mass of radium
Connecting devices. Electrical copper conductors. Safety requirements for screw-type and screwless-type clamping units. Part 1. General requirements and particular requirements for clamping units for conductors from 0,2 up to 35 sq. mm (included)
Radionuclide ionizing radiation sealed sources. Durability classes and test methods. Norms of degrees of rigidity under climatic and mechanical influences
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