Sailon, Sailon, et al. “THE EFFECT OF CARBURIZING COW BONE CHARCOAL ON THE INCREASE IN HARDNESS OF EGREK PRODUCTS OF BLACKSMITH IN TANJUNG PINANG VILLAGE”. AUSTENIT, vol. 14, no. 2, Oct. 2022, pp. 69-74, doi:10.53893/austenit.v14i2.4922.