Febritasari, Rosadila, Tito Arif Sutrisno, Herlan Hafiidh Jikwa, Dhea Rosali Berta, I Made Pande Artayasa, Bernadino Arsinyo Nahak, and Yohanes Yordan H. P.I. 2024. “Modification of Grass Chopper Blade from Leaf Spring With Coconut Shell Charcoal Addition by Carburizing Treatment”. Piston: Journal of Technical Engineering 7 (2):69-74. https://doi.org/10.32493/pjte.v7i2.34439.