@book{38262,
	author = {Berreby, Jean-Jacques. and Valera Lacasa, P.},
	title = {El petróleo en la estrategia mundial  /},
	publisher = {Guadarrama, },
	year = {1974.},
	series = {Colección universitaria de bolsillo Punto Omega.},
	address = {Madrid }
}