Wassouf, Moustafa. 2025. “The Use Of Natural Pozzolana As An Alternative To Portland Cement With Recycled Pebbles For The Manufacture Of Concrete With Environmental Properties”. Latakia University Journal -Engineering Sciences Series 46 (5):215-32. https://journal.latakia-univ.edu.sy/index.php/engscnc/article/view/18156.