INVESTIGATION OF LEACHATE INFILTRATION ON GROUNDWATER USING GEO-RESISTIVITY AND NATURAL ELECTRIC FIELD METHOD AROUND OJOOU-OLAYANJU’S DUMPSITE, ADA, SOUTHWESTERN NIGERIA. NIJOTECH [Internet]. 2024 Mar. 31 [cited 2025 Oct. 20];43(1). Available from: https://www.nijotech.com/index.php/nijotech/article/view/3275