@book{1161,
	author = {Ramsden, Eileen.},
	title = {Key science chemistry },
	publisher = {Nelson Thornes Ltd,},
	year = {1994.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0748716750/chopaconline-20}
}