Keeratiurai, Prayong. “The Effects of Acid Rain to the Strength of Reinforcing Steel”. Journal of Vongchavalitkul university 32, no. 2 (December 27, 2019): 60–70. Accessed April 20, 2024. https://ph01.tci-thaijo.org/index.php/vujournal/article/view/239943.