ZHEKOV , Z. . METHOD AND SPECTROPHOTOMETRIC EQUIPMENT FOR WATER RESEARCH: METHOD AND SPECTROPHOTOMETRIC EQUIPMENT FOR WATER RESEARCH. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, [S. l.], v. 5, n. 1, p. 70–75, 2023. DOI: 10.46687/jsar.v5i1.111. Disponível em: https://jsar.ftn.shu.bg/index.php/jsar/article/view/111. Acesso em: 7 nov. 2024.