@book{33190,
	author = {Bowker, Albert H. and Lieberman, Gerald J.,},
	title = {Engineering statistics /},
	publisher = {Prentice-Hall ,},
	year = {c1972 .},
	address = {Englewood Cliffs, N.J. :},
	edition = {2nd ed.},
	note = {Includes index.}
}