OGBARAGU, GODSWILL MARK; OKOLIE, KELVIN CHUKS. Application Of Quality Management Systems in The Production of Concrete in Abakiliki and Afikpo, Ebonyi State, Nigeria. International Journal of Progressive Research in Science and Engineering , [S. l.], v. 3, n. 03, p. 12–22, 2022. Disponível em: https://journals.grdpublications.com/index.php/ijprse/article/view/509. Acesso em: 8 feb. 2023.