[1]
B. Anggelia, E. Elvina, and N. L. Nasution, “Training For Making Handsanitizer From Betel Leaf Extract and Lime Oranges in Smp Negeri 2 Na Ix-X Sumberjo, Labuhanbatu Utara Regency”, IJCS, vol. 2, no. 1, pp. 143–148, Feb. 2022.