Russian standards PDF
Concrete and reinforced blocks for walls of buildings. General specifications
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Soils. Test method for determination of the strength and deformation modulus experiencing a point load
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Occupational safety standards system. Respiratory protective devices. Filtering half masks against aerosols with additional protection against vapors and gases. General technical requirements. Test methods. Marking
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Nanotechnologies. Air purification filter materials containing polymer nanofibers. Characteristics and measurement methods
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United power system and isolated power systems. Thermal power plants. Heat-power equipment. Operational and pre-start steam-oxygen treatment, passivation and conservation of the internal heating surfaces of power equipment. Rules for conducting
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