@book{27324,
	author = {Staack, J. G.},
	title = {Spirit leveling in Connecticut, 1922-35,},
	publisher = {U.S. Govt. print. off.,},
	year = {1937.},
	series = {U.S. Geological Survey. Bulletin 881},
	address = {Washington,},
	note = {At head of title: United States Department of the interior.}
}