| http://digfir-published.macmillanusa.com/pierce_5e_eoc/pierce_5e_eoc_ch3_first_20_only.html | Chapter 1. End of Chapter 3 Problems
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| http://digfir-published.macmillanusa.com/pierce_5e_eoc/pierce_5e_eoc_ch3_first_20_only_dlap.xml | DLAP questions | 52715f19757a2e2d7e000000 |