@book{1922,
	author = {Mauny, Raymond. and Pereira, Duarte Pacheco.},
	title = {Esmeraldo de Situ Orbis: Cote Occidentale d'Afrique du Sud marocain au Gabon/},
	publisher = {Centro de Estudos da Guiné Portuguesa,},
	year = {1956.},
	address = {Bissau:},
	note = {1956}
}