@book{4326,
	author = {Harrington, J. M.},
	title = {Occupational health /},
	publisher = {Blackwell Science,},
	year = {1998.},
	address = {Oxford ;},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0808/98016050-b.html}
}