Okechukwu C O, Okolie K C, Ezeokoli F O. Non-Destructive Evaluation of Quality of Concrete Elements in Existing Buildings for Structural Stability in Onitsha, Anambra State, Nigeria. IJPRSE [Internet]. 2021 Dec. 12 [cited 2024 Nov. 25];2(12):19-25. Available from: https://journal.ijprse.com/index.php/ijprse/article/view/481