PREDICTING FLEXURAL STRENGTH OF CONCRETES INCORPORATING RIVER GRAVEL USING MULTI-LAYER PERCEPTRON NETWORKS: A CASE STUDY OF EASTERN NIGERIA. NIJOTECH [Internet]. 2014 Dec. 30 [cited 2026 Apr. 16];34(1):12-20. Available from: https://nijotech.com/index.php/nijotech/article/view/886