@book{27794,
	author = {American Association of Petroleum Geologists. and Levorsen, A. I.},
	title = {Report of a conference on the origin of oil,},
	publisher = {The American association of petroleum geologists},
	year = {[1941]},
	address = {Tulsa, Okla.,},
	note = {A.I. Levorsen, chairman.}
}