338.2724
B575W
           Bhattacharyya, Sarathi Partha
               When coal turned gold the making of a maharatna company \ Sarathi Partha Bhattacharyya - Gurgaon : Penguin Random House, 2018.
               xxiv, 181p.
                ISBN: 9780670090761

156025
                Subjects: MINES AND MINERAL RESOURCES; COAL MINES AND MINING.