AMIN, N.- ul-.; ALI, K. Chemical Analysis and Comparison of Ordinary Portland Cement of Khyber Pakhtoon Khwa Pakistan. Chemical Engineering Research Bulletin, [S. l.], v. 14, n. 1, p. 45–49, 2010. DOI: 10.3329/cerb.v14i1.4320. Disponível em: https://www.banglajol.info/index.php/CERB/article/view/4320. Acesso em: 28 mar. 2024.