D. F. I, B. N. GEOELECTRICAL AND DOWN-HOLE INVESTIGATIONS FOR DELINEATING FRESHWATER AQUIFER IN PARTS OF OBIO/AKPOR LOCAL GOVERNMENT AREA, RIVERS STATE, NIGERIA. bj [Internet]. 2023 Aug. 19 [cited 2026 Apr. 18];:13. Available from: https://bwjournal.org/index.php/bsjournal/article/view/1413