HARTONO, Arief; NUGROHO, Budi; EDWAR, Feabri Kurniawan. Manufacture Potassium Silicate Fertilizer Based on Quartz Sand from Bangka . Jurnal Ilmu Tanah dan Lingkungan, [S. l.], v. 25, n. 1, p. 19–24, 2023. DOI: 10.29244/jitl.25.1.19-24. Disponível em: https://journal.ipb.ac.id/jtanah/article/view/45211. Acesso em: 29 dec. 2025.