Simamora KP, Lubis KS, Sembiring RP, Rrangkuti HM, Syamsiah. Utilization of Coconut Shell Waste which is One of the Sources of Community Income. j [Internet]. 2023 May 28 [cited 2024 Oct. 16];1(1):86-91. Available from: https://ijosthes.org/index.php/j/article/view/27