Baazi Houria, Nemili Zohra, Necer AbdeLdjabar and Saoudi Messaoud 2024. GROUNDWATER POLLUTION SOURCE USING PRINCIPAL COMPONENT ANALYSIS IN GUELMA PLAIN, NORTHEAST ALGERIA. International Journal of Innovative Technologies in Social Science. 3(43) (Sep. 2024). DOI:https://doi.org/10.31435/rsglobal_ijitss/30092024/8248.