@book{67124,
	author = {National Research Council (U.S.). and Hawley, Willis D. and ebrary, Inc.},
	title = {Measuring access to learning opportunities},
	publisher = {National Academies Press,},
	year = {c2003.},
	address = {Washington, D.C. :},
	note = {"Center for Education and Committee on National Statistics,  Division of Behavioral and Social Sciences and Education, National Research Council of the National Academies."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10051685}
}