@book{24625,
	author = {Wrigley, Henry E. and Lucas, D. Jones.},
	title = {Special report on the petroleum of Pennsylvania,},
	publisher = {Pub. by the Board of Commissioners for the Second Geological Survey,},
	year = {1875.},
	series = {Pennsylvania. Geological Survey, 2d. Report of progress},
	address = {Harrisburg,},
	note = {At head of title: Second Geological Survey of Pennsylvania, 1874.}
}