@book{25471,
	author = {Marshall, R. B. and Michigan.},
	title = {Results of spirit leveling in Michigan, 1911 and 1913 /},
	publisher = {Govt. Print. Off.,},
	year = {1914.},
	series = {U.S. Geological survey. Bulletin 559},
	address = {Washington,},
	note = {Includes index.}
}