@book{155158,
	author = {Ahlbrandt, Thomas S. and United States Geological Survey and World Petroleum Congress (15th. : 1997 : Beijing) and Klett, T.R. and United States Geological Survey},
	title = {Estimates of undiscoveres oil and gas in petroleum systems of the world},
	note = {Incluído en : Block 1- Exploration.}
}