Analysis Sulphur (S) Content of SP-36 Fertilizer PT Petrokimia Using In-House and Innovation Method. ALKIMIA : Jurnal Ilmu Kimia dan Terapan, [S. l.], v. 4, n. 2, p. 73–79, 2021. DOI: 10.19109/alkimia.v4i2.7561. Disponível em: https://jurnal.radenfatah.ac.id/index.php/alkimia/article/view/7561.. Acesso em: 4 apr. 2025.