Ali, Ismat, M A Basit, M Mohsin Ali, and A Rasheed Khan. 2002. “BEHAVIOUR OF LAKHRA LIGNITE IN ATMOSPHERIC FLUIDIZED BED COMBUSTION (AFBC)”. Biological Sciences - PJSIR 45 (2):79-81. https://v2.pjsir.org/index.php/biological-sciences/article/view/1754.