B. MADSEN, Henrik. John Ormsbee Simonds: Earthscape. A manual of environmental planning McGraw-Hill Book Company, New York 1978. XII, 340 s., ill. 31 cm. DM 71,50. Geografisk Tidsskrift, [S. l.], v. 80, 1980. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/45288. Acesso em: 5 dec. 2025.