@book{7310,
	author = {Leech, J. W. and Newman, D. J.},
	title = {How to use groups /},
	publisher = {Methuen,},
	year = {c1969 [reprint 1970].},
	series = {Methuen's monographs on physical subjects},
	address = {London :},
	note = {"Distribution in the U.S.A. by Barnes and Noble."}
}