Explosionproof electrical apparatus. Part 12. Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
Leather. Chemical tests for the determination of azo colorants in dyed leathers. Part 1. Determination of certain aromatic amines derived from azo colorants
Safety in emergencies. Procedure for the development of a list of measures for civil defense, measures for prevention of natural and man-caused emergencies in capital construction design
