@book{26958,
	author = {Ferguson, Henry G. and Gannett, Roger W.,},
	title = {Gold quartz veins of the Alleghany district, California,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1932.},
	series = {U.S. Geological Survey. Professional paper 172},
	address = {Washington,},
	note = {At head of title: United States Department of the Interior.}
}