@book{520,
	author = {Zandín, B.Kjell},
	title = {Maynard : manual del ingeniero industrial},
	publisher = {McGraw-Hill ,},
	year = {2001.},
	address = {México; D.F. :},
	edition = {5a ed.},
	note = {Título original : Maynard's industrial engineering handbook.}
}