| http://digfir-published.macmillanusa.com/hm_custom_osu/hmumississippi_stratton50997f12_lab12.html | Chapter 2. Corn Genetics
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| http://digfir-published.macmillanusa.com/hm_custom_osu/hmumississippi_stratton50997f12_lab12_dlap.xml | DLAP questions | 519fa72bb11c0f3417000000 |