@book{126512,
	author = {O'Brien, George, and ebrary, Inc.},
	title = {An Essay on medi�val economic teaching},
	publisher = {Batoche,},
	year = {2001.},
	address = {Kitchener, Ont. :},
	note = {Notes : 125-147.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=2001963}
}