@book{48620,
	author = {Delgado, Joaquim Filipe Nery,  and Academia das Ciências de Lisboa.},
	title = {Système silurique du Portugal },
	editor = {Imp. de l'Academie Royale des Sciences)},
	publisher = {Commision du Service Géologique du Portugal, },
	year = {1908 (},
	address = {Lisbonne : }
}