| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_3_021.html | Chapter 1. | 501ec0fcb11c0fab7d000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_3_021_dlap.xml | DLAP questions | 501ec0fcb11c0fab7d000000 |