@book{8878,
	author = {Toft, L & McKay, A D D.},
	title = {Practical mathematics /},
	publisher = {Sir Isaac Pitman & Sons,},
	year = {1966.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/B001109Q6W/chopaconline-20}
}