| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab9_prelab2.html | Chapter 2. Carbon Metabolism: Fermentation
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| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab9_prelab2_dlap.xml | DLAP questions | 51e3fe5db62f8b8b21000008 |