Omundi, L., Yadima, S. and Sanyaolu, B. (2003) “The effect of varied mix proportion and water-cement ratio on the compressive strength of medium grade concretepoduced from Bama gravel”, ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, 3, pp. 44-48. Available at: http://www.azojete.com/index.php/azojete/article/view/312 (Accessed: 14September2025).