@book{26881,
	author = {Barb, Clark F. and Shelley, Paul Gray,},
	title = {Production data on Appalachian oil fields,},
	publisher = {School of Mineral Industries,},
	year = {1930.},
	series = {Pennsylvania. State College. Mineral Industries Experiment Station. Bulletin 6},
	address = {State College, Pa.,}
}