@book{27343,
	author = {Waring, Gerald A.},
	title = {Geology of the Anthracite Ridge coal district, Alaska,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1936.},
	series = {U.S. Geological survey. Bulletin},
	address = {Washington,},
	note = {At head of title: United States Department of the interior.}
}