Abuisbuya ابوالقاسم يحي, and Gbyayal المبروك ابوالقاسم. “A Reference Study to Compare the Methods of Designing Concrete Mixes Used in Libya”. Journal of Pure & Applied Sciences 20, no. 4 (December 28, 2021): 137–142. Accessed May 5, 2024. https://sebhau.edu.ly/journal/jopas/article/view/1722.