Water quality assessment and hydrochemical characterization of Zamzam groundwater, Saudi Arabia.Published in:Applied Water Science, 2017, v. 7, n. 7, p. 3985, doi. 10.1007/s13201-017-0549-xBy:Al-Barakah, Fahad;Al-jassas, Abdurahman;Aly, AnwarPublication type:Article