Jovliyev Ziyodulla Anvar Ogli. CHEMICAL COMPOSITION OF PORTLAND CEMENT CLINKER. Amer. Jour. of Peda. and Educ. Rese. [Internet]. 2023 Jun. 22 [cited 2024 Nov. 13];13:111-4. Available from: https://americanjournal.org/index.php/ajper/article/view/1002