@book{70247,
	author = {Salas, Saturnino L. and Salas, Charles G.},
	title = {Preparation for calculus /},
	publisher = {Wiley,},
	year = {1975 [reprinted 1985]},
	address = {New York :},
	edition = {3rd ed.},
	note = {Includes index.}
}