Fajarwati, Febi Indah, Athalia Tasya Hermawati, and Sri Widada. “Analisis Kadar Nitrogen Total Pada Pupuk Padat Dengan Metode Kjedahl Di Balai Pengkajian Teknologi Pertanian (BPTP) Yogyakarta”. INDONESIAN JOURNAL OF CHEMICAL RESEARCH 6, no. 2 (January 17, 2022): 80–91. Accessed April 26, 2024. https://journal.uii.ac.id/chemical/article/view/22279.