@book{256944,
	author = {United States.},
	title = {Position paper on regulation of atmospheric sulfates /},
	publisher = {U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Air Quality Planning and Standards,},
	year = {September 1975.},
	address = {Research Triangle Park, North Carolina :},
	note = {Title from title screen (viewed on Apr. 19, 2016).},
	url = {http://purl.fdlp.gov/GPO/gpo67118}
}