@book{30820,
	author = {Childs, Lindsay N.},
	title = {A concrete introduction to higher algebra},
	publisher = {Springer Science+Business Media, Inc.},
	year = {2009},
	series = {Undergraduate texts in mathematics},
	address = {New York},
	edition = {3rd},
	note = {"Purchased under NBHM grant for the year 2009-2010"}
}