| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_14_8_011-2.html | Chapter 1. calc_tutorial_14_8_011-2
| 50c0bbb9b11c0f483b000001 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_14_8_011-2_dlap.xml | DLAP questions | 50c0bbb9b11c0f483b000001 |