@book{25082,
	author = {Marshall, R. B.},
	title = {Results of spirit leveling in Utah, 1897 to 1910, inclusive /},
	publisher = {Govt. Print. Off.,},
	year = {1911.},
	series = {U.S. Geological survey. Bulletin 489},
	address = {Washington,},
	note = {Includes index.}
}