| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_appendixd.html | Chapter 2. Data Analysis and Presentation
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| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_appendixd_dlap.xml | DLAP questions | 51e751e2757a2e4124000005 |