@book{70000,
	author = {Kells, Lyman M. },
	title = {College algebra /},
	publisher = {Prentice-Hall,},
	year = {c1956, 1957},
	series = {Prentice-Hall mathematics series.},
	address = {Englewood Cliffs, N.J. :},
	note = {Includes index}
}