Ernis, Gustria, Donna Sagita Mala, Amelisa Okta, Doni Notriawan, and Muhammad Adeng Fadila. 2023. “Nutrition Levels of Liquid Organic Fertilizer from Onion Skin (Allium Cepa. L) With EM-4 Bioactivator”. JURNAL SAINS NATURAL 13 (2):73-80. https://doi.org/10.31938/jsn.v13i2.468.