Hendri Hestiawan, Nurul Iman Supardi, Angky Puspawan. Introducing retort for making charcoal from coconut shells. dk [Internet]. 2024 Nov. 30 [cited 2025 Dec. 5];1(2):61-7. Available from: https://ejournal.unib.ac.id/dharmakayana/article/view/38913