Identification and Counting of Bacterial Colonies on Mobile Phones Before and After 70% Alcohol Disinfection. Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam, [S. l.], v. 20, n. 2, p. 147–156, 2023. DOI: 10.31851/sainmatika.v20i2.13128. Disponível em: https://jurnal.univpgri-palembang.ac.id/index.php/sainmatika/article/view/13128. Acesso em: 21 jun. 2026.