@book{109489,
	author = {Susan N. Friel, grades 6-8 editor.},
	title = {Navigating through geometry in grades 6-8},
	publisher = {National Council of Teachers of Mathematics},
	year = {2002},
	series = {Principles and standards for school mathematics navigations series},
	address = {[S.l.]},
	edition = {. ed.},
	url = {000010/00001001.jpg}
}