1.
Sari sinta widya, Masthura M, Husnah M. The Effect of Variations in Cocoa Shell Carbon on the Characteristics of Environmentally Friendly Stamp Ink. Phi: J. Phys. Edu. & Applied [Internet]. 2025 Jan. 26 [cited 2026 Aug. 9];11(1):45-51. Available from: https://jurnal.ar-raniry.ac.id/index.php/jurnalphi/article/view/20137