GOST 21534-76

Lead. Methods for the determination of copper

Brown coal, hard coal, anthracite and combustible shales. Method for sampling of seam samples

Ferrovanadium. Methods for determination of total aluminium

Electrical apparatus for use in the presence of combustible dust. Past 1:2. Electrical apparatus protected by enclosures and surface temperature limitation. Selection, installation and maintenance

Environmental management systems. General guidelines on creation, introduction and supporting techniques at the chemical weapons destruction facilities

Cable cleats for electrical installation