| http://digfir-published.macmillanusa.com/hm_custom_osu/hmosu_lab9_emission of light: dischargelamps_f13.html | Chapter 14. Emission of Light: Discharge Lamps and Flame Tests
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| http://digfir-published.macmillanusa.com/hm_custom_osu/hmosu_lab9_emission of light: dischargelamps_f13_dlap.xml | DLAP questions | 51f7fe59b62f8b1069000001 |