@book{26192,
	author = {Butler, G. M. and Allen, Milton Arthur,},
	title = {Uranium and radium,},
	publisher = {Pub. by the University, Arizona Bureau of Mines,},
	year = {1921.},
	series = {Arizona. Bureau of Mines. Bulletin},
	address = {Tucson, Ariz.,},
	note = {Cover title.}
}