OSPINA, S. Some Observations on Outer Space from Earth and Some Observations on Earth from Outer Space. Oasis, [S. l.], n. 20, p. 23–35, 2014. Disponível em: https://revistas.uexternado.edu.co/index.php/oasis/article/view/4007. Acesso em: 28 mar. 2024.