Hafeez, Irfan, Muhammad Aamir, Saqib Nasir, Zaki- ud-din, Athar Amin, and Adnan Akram. 2019. “Bio-Physiochemical Beneficiation of Low Grade Coal from Lakhra Mine, (Sindh) Pakistan”. Journal of Asian Scientific Research 9 (10):173-84. https://doi.org/10.18488/journal.2.2019.910.173.184.