| http://digfir-published.macmillanusa.com/hm_custom_osu/hmosu_lab7_emissionoflight_f13.html | Chapter 14. Emission of Light and Atomic Models
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| http://digfir-published.macmillanusa.com/hm_custom_osu/hmosu_lab7_emissionoflight_f13_dlap.xml | DLAP questions | 51f69e0f757a2e996e00000e |