@book{257179,
	author = {United States.},
	title = {Protocol for EPA approval of new methods for inorganic and organic analytes in wastewater and drinking water.},
	publisher = {U.S. Environmental Protection Agency, Office of Water, Engineering and Analysis Division,},
	year = {1999.},
	address = {Washington, D.C. :},
	note = {"March 1999."},
	url = {http://purl.fdlp.gov/GPO/gpo73632}
}