ZUBAIR, A.; ALI, S. I. THE VARIATION OF CALCIUM, MAGNESIUM, SODIUM, POTASSIUM AND BICARBO­ NATE CONCENTRATION, pH AND CONDUCTIVITY IN GROUNDWATER OF KARACHI REGION. Biological Sciences - PJSIR, [S. l.], v. 45, n. 3, p. 151–156, 2002. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1775. Acesso em: 19 may. 2024.