Study of the physico-chemical properties of the basement aquifer in the rural commune of Ampangabe, Ambohidratrimo district - E, RAZANAKOTO Onjaniaina; C, RANDRIAMBOAVONJY Jean; E, RAKOTONIRINA Vonjiarivony; Fidiniavo, RAVOKATRA (International Journal of Advance Research and Innovative Ideas In Education, 2023)