@book{323,
	title = {Safeguards in the school laboratory.},
	publisher = {Association for Science Education,},
	year = {1996.},
	address = {[S.l.] :},
	edition = {10th edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0863570836/chopaconline-20}
}