RUSTAN, Rustan; DWI RAMADHAN, Fajar; AFRIANTO, M. Ficky; HANDAYANI, Linda; PUJI LESTARI, Ardiyaningsih; MANIN, Fahmida. PERANCANGAN ALAT PENGUKUR KADAR UNSUR HARA NPK PUPUK KOMPOS. JOURNAL ONLINE OF PHYSICS, [S. l.], v. 8, n. 1, p. 55–60, 2022. DOI: 10.22437/jop.v8i1.20838. Disponível em: https://mail.online-journal.unja.ac.id/jop/article/view/20838. Acesso em: 7 apr. 2025.