SARATE, O. S. Petrographic appraisal of coals of sub-surface seams from Belampalli Coalfield, Godavari Valley, Andhra Pradesh. Journal of Palaeosciences, [S. l.], v. 63, n. (1-2), p. 51–62, 2014. DOI: 10.54991/jop.2014.291. Disponível em: https://www.jpsonline.co.in/index.php/jop/article/view/291. Acesso em: 29 apr. 2024.