Sadeli, A. and Nasution, T.I. 2022. Waste Processing as Organic Compost Fertilizer Using Smart Composter in Sei Ular Village, Secanggang District, Langkat Regency. Journal of Saintech Transfer. 5, 1 (Jun. 2022), 13-20. DOI:https://doi.org/10.32734/jst.v5i1.8740.