| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_1_4_021.html | Chapter 1. | 4fad71aab11c0f1362000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_1_4_021_dlap.xml | DLAP questions | 4fad71aab11c0f1362000000 |