@book{24810,
	author = {Spurr, Josiah Edward, and Garrey, George H.,},
	title = {Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado,},
	publisher = {Govt. Print. Off.,},
	year = {1908.},
	address = {Washington,},
	note = {Four folded plates, including 2 maps, in pocket.}
}