@book{25170,
	author = {Spence, Hugh S. and Cirkel, Fritz, and Canada.},
	title = {Mica,},
	publisher = {Government Printing Bureau,},
	year = {1912.},
	address = {Ottawa,},
	edition = {2d ed.},
	note = {At head of title: Canada. Dept. of Mines. Mines Branch.}
}