GOST 18720-90

Information technology. Learning, education and training. Metadata for learning resources. Part 5. Educational elements

State system for ensuring the uniformity of measurements. State verification schedule for means measuring air kerma, air kerma rate, exposure, exposure rate, ambient dose equivalent, directional dose equivalent and personal dose equivalent, ambient dose equivalent rate, directional dose equivalent rate and personal dose equivalent rate and energy flux of X-ray and gamma radiation

Concrete mixtures. General requirement to test methods

Identification cards. Optical memory cards. Linear recording method. Part 1. Physical characteristics

Ecological requirements for estate properties. Terms and definitions

Walls, ledges and ribs of rigidity of aluminium casting patterns. Dimensions