| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_13_3_010.html | Chapter 1. calc_tutorial_13_3_010
| 50c9dfd5b11c0fb06c000001 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_13_3_010_dlap.xml | DLAP questions | 50c9dfd5b11c0fb06c000001 |