@book{26103,
	author = {Allen, Milton Arthur, and Butler, G. M.},
	title = {Asbestos,},
	publisher = {University of Arizona, Arizona bureau of mines,},
	year = {1921.},
	series = {Arizona. Bureau of mines, Bulletin},
	address = {Tucson, Ariz.,},
	note = {At head of title: University of Arizona bulletin.}
}