SINGH, A.; SINGH, B. Coal Petrology - A shifting role from coal utilization to fuel exploration. Journal of Palaeosciences, [S. l.], v. 57, n. (1-3), p. 257–264, 2008. DOI: 10.54991/jop.2008.243. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/243. Acesso em: 28 apr. 2024.