Application of Very Low Frequency Electromagnetic (VLF-EM) and 2D Electrical Resistivity Methods for Pre-Foundation Studies at Nuhu Bamalli Polytechnic, Zaria. NJP [Internet]. 2024 Dec. 31 [cited 2025 May 19];33(4):109-18. Available from: https://njp.nipngr.org/index.php/njp/article/view/330