@book{249639,
	author = {National Institute for Occupational Safety and Health.},
	title = {Occupational exposure to hexavalent chromium.},
	publisher = {Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health},
	year = {2013.},
	series = {Criteria for a recommended standard},
	address = {[Atlanta, Ga.?]},
	edition = {Revised with minor technical changes.},
	note = {"September 2013"--Page ii.}
}