“Assessment of the Calorific Value of Charcoal from Gmelina Arborea (Roxb), Tectona Grandis (Linn) and (Bentham)”, GJSFR, vol. 15, no. 9, pp. 29–32, Mar. 2015, Accessed: Oct. 25, 2026. [Online]. Available: https://journalofscience.org/index.php/GJSFR/article/view/