@book{13408,
	author = {PERRY, JOYCE PERRY' 'O.W.},
	title = {Mastering mathematics /},
	publisher = {MACMILLAN,},
	year = {1982.},
	address = {[S.l.] :},
	note = {Import.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0333312929/chopaconline-20}
}