@book{70580,
	author = {Levorsen, A. I. and Berry, Frederick A. F.},
	title = {Geology of petroleum /},
	publisher = {W. H. Freeman,},
	year = {c1967 [reprinted 1972]},
	series = {A Series of books in geology},
	address = {San Francisco :},
	edition = {2nd ed.},
	note = {Includes index}
}