VERMA, L. Cement, Concrete and Research Literature Online Repositories (Portland Cement Association). Issues in Science and Technology Librarianship, [S. l.], n. 98, 2021. DOI: 10.29173/istl2661. Disponível em: https://journals.library.ualberta.ca/istl/index.php/istl/article/view/2661. Acesso em: 29 jan. 2022.