@book{25034,
	author = {Marshall, R. B.},
	title = {Results of spirit leveling in the state of Washington, 1896 to 1910, inclusive /},
	publisher = {Govt. Print. Off.,},
	year = {1911.},
	series = {U.S. Geological survey. Bulletin 457},
	address = {Washington,},
	note = {Includes index.}
}