@book{25590,
	author = {Marshall, R. B.},
	title = {Results of spirit leveling in Arizona, 1899 to 1915, inclusive /},
	publisher = {Govt. Print. Off.,},
	year = {1915.},
	series = {U.S. Geological survey. Bulletin 573},
	address = {Washington,},
	note = {Includes index.}
}