@book{99744,
	author = {Grant, Edward, and ebrary, Inc.},
	title = {The nature of natural philosophy in the late Middle Ages},
	publisher = {Catholic University of America Press,},
	year = {c2010.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10603287}
}