@book{268345,
	author = {United States.},
	title = {The state of the world :},
	publisher = {U.S. Government Publishing Office,},
	year = {2017.},
	address = {Washington :},
	note = {Paper version available for sale by the Superintendent of Documents, United States Government Publishing Office.},
	url = {http://purl.fdlp.gov/GPO/gpo87631}
}