URL	Title	Id
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_15_4_021.html	Chapter 1. calc_tutorial_15_4_021	50c242c2b11c0fc546000000
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_15_4_021_dlap.xml	DLAP questions	50c242c2b11c0fc546000000