http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Fourth Edition is a practical, illustrated source of life-saving information designed for specific work environments. This must-have guide provides the most current safety strategies for use in industrial, commercial, and home-office electrical systems in an easy-to-use format. Written by experts in electrical operations, maintenance, engineering, construction, and safety