HANSEN., K. W. H. Emmons, G. A.Thiel, C. R. Stauffer and I. S. Allison: Geology. Principles and processes. McGraw-Hill Book Comp., New York, Toronto, London. Fourth Edition. 1955. 638 sider. 519 fig., 23x15 cm. Geografisk Tidsskrift, [S. l.], v. 55, 1956. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/46279. Acesso em: 4 maj. 2024.