| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_8_029.html | Chapter 1. | 50219a8cb11c0ffa07000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_8_029_dlap.xml | DLAP questions | 50219a8cb11c0ffa07000000 |