Optics and photonics. Lasers and laser-related equipment. Standard optical elements. Part 2. Standard optical elements for laser equipment operating in the infrared spectral range. General technical requirements
Occupational safety standards system. Dermatological personal protective products. Test methods for directed efficiency of dermatological personal protective products of protective type. Part 5. Products for protection against biological factor (blood-sucking insect and arachnids)
Prefabricated construction concrete and reinforced conсrete products. Load testing methods. Rules for assessment of strength, rigidity and crack resistance
