B. BØGGILD, O. Henry B. Sullivan: A catalogue of geological maps of South America. American Geographical Society. Research Series No. 9. New York 1922. Geografisk Tidsskrift, [S. l.], v. 26, 1922. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/47199. Acesso em: 3 maj. 2024.