| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_4_1_019.html | Chapter 1. | 4fcfa743b11c0f8c51000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_4_1_019_dlap.xml | DLAP questions | 4fcfa743b11c0f8c51000000 |