U.S. Institute of Museum / Library Services / San Francisco Main Library / /
IndustryTerm
improved-color metal halide lamps / metal halide / energy standards / energy efficiency / lowest energy use / energized gas / light energy incident / energy savings / light energy / metal halide lamps / energy / /
Movie
Page 3 3 / /
Organization
National Council of Qualifications for the Lighting Professions / U.S. Institute / /