Bhattacharyya, A. and Mukherjee, B. (1969) “Petrological Studies of Coals from East Bokaro Coalfield, Bihar”, Journal of Geological Society of India, 10(1), pp. 56–64. Available at: https://geosocindia.com/index.php/jgsi/article/view/60612 (Accessed: 20 September 2024).