| URL | Title | Id |
|---|---|---|
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_17_3_005.html | Chapter 1. calc_tutorial_17_3_005 | 50ccbf8cb11c0fc57e000001 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_17_3_005_dlap.xml | DLAP questions | 50ccbf8cb11c0fc57e000001 |