@book{25691,
	author = {Marshall, R. B.},
	title = {Spirit leveling in New Mexico,},
	publisher = {Govt. Print. Off.,},
	year = {1916.},
	series = {United States.  Geological Survey.  Bulletin 638},
	address = {Washington,},
	note = {At head of title:  Department of the Interior.}
}