METHODS FOR EXTRACTING NATURAL BITUMEN AND VISCOUS OIL DEPOSITS. European Journal of Emerging Technology and Discoveries, [S. l.], v. 2, n. 12, p. 25–32, 2024. Disponível em: https://europeanscience.org/index.php/1/article/view/1090. Acesso em: 12 sep. 2025.