@book{21644,
	author = {Lewis, Robert Strong, and University of Utah.},
	title = {Mining, the priceless heritage /},
	publisher = {Extension Division, University of Utah,},
	year = {1939.},
	series = {Bulletin of the University of Utah ;},
	address = {Salt Lake City :},
	note = {At head of title: Extension Division, University  of Utah.}
}