@book{12066,
	author = {Friis, Robert H.},
	title = {Essentials of environmental health /},
	publisher = {Jones abd Bartlett,},
	year = {2019},
	address = {Burlington :},
	edition = {third edition},
	url = {http://www.loc.gov/catdir/toc/fy0610/2005036851.html}
}