TRAUFFER, W. . A new cement plant in South Dekota. Materiales de Construcción, [S. l.], v. 1, n. 022, p. 28–28, 1951. DOI: 10.3989/mc.1951.v01.i022.2799. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2799. Acesso em: 2 may. 2024.