URL	Title	Id
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_5.4.16.html	Chapter . 5.4.16	50892907b11c0ff01f000000
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_5.4.16_dlap.xml	DLAP questions	50892907b11c0ff01f000000