VERY LOW FREQUENCY ELECTROMAGNETIC (VLF-EM) SURVEY FOR GROUNDWATER DEVELOPMENT IN BICHI/BAGWAI AREA, NORTH WESTERN NIGERIA. FJS [Internet]. 2023 Oct. 31 [cited 2025 Sep. 17];7(5):318-27. Available from: http://162.254.38.185/index.php/fjs/article/view/1977