| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_4_2_042.html | Chapter 1. | 4fd214beb11c0f7f59000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_4_2_042_dlap.xml | DLAP questions | 4fd214beb11c0f7f59000000 |