GOST 19286-77

Occupational safety standards system. Additional respiratory personal protective equipment for works with radioactive and chemically toxic substances. General requirements and test methods

Uncut natural diamonds. Classification. Main characteristics

Litharge. Specifications

Pulsed thyratrons. Main parameters

Social service of the population. Types of establishments of social service of family and children

Electrical apparatus for explosive gas atmospheres. Part 1. Construction and verification test of flameproof enclosures of electrical apparatus. First supplement. Appendix D. Method of test for ascertainment of maximum experimental safe gap