@book{146553,
	author = {Du Bray, E. A.},
	title = {Geochemistry and petrology of Oligocene and Miocene ash-flow tuffs of the southeastern Great Basin, Nevada},
	publisher = {U.S. G.P.O.},
	year = {1994.},
	series = {U.S. Geological Survey professional paper},
	address = {Washington}
}