@book{190859,
	author = {O'Neill, J. M.},
	title = {Geologic investigations in the Lake Valley area, Sierra County, New Mexico},
	publisher = {U.S. Geological Survey},
	year = {2002.},
	series = {U.S. Geological Survey professional paper},
	address = {Denver, Colo.},
	note = {Literaturverz. S. 76 - 78.}
}