@book{1236,
	author = {Zumdahl, Steven S.},
	title = {Introductory chemistry /},
	publisher = {D C Heath & Co,},
	year = {1996.},
	address = {[S.l.] :},
	edition = {3rd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0669397598/chopaconline-20}
}