@book{7251,
	author = {Simpson, Alan. and Mosich, Donna M.},
	title = {Focus on symphony data bases /},
	publisher = {Longman Higher Education,},
	year = {1986.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0895883368/chopaconline-20}
}