Fajrin Harahap, Muharram, Rafiqah Amanda Lubis, Aisyah Nurmi, and Darmadi Erwin Harahap. “Metal Content Of Midrib Sap Flour Salak Tree (Tgps) As A Thickening Agent”. International Journal of Science, Technology & Management 4, no. 5 (September 26, 2023): 1288-1293. Accessed March 1, 2025. https://ijstm.inarah.co.id/index.php/ijstm/article/view/908.