K. SINGH, P. Revelation of tin and niobium occurrences in Southern Uis Region of Namibia through a geological reconnaissance study. Trabajos de Geología, [S. l.], v. 28, n. 28, 2011. Disponível em: https://reunido.uniovi.es/index.php/TDG/article/view/290. Acesso em: 29 abr. 2024.