NORDBERG, B. PCA’s new research laboratories. Materiales de Construcción, [S. l.], n. 016, p. 35–38, 1950. DOI: 10.3989/mc.1950.i016.3146. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/3146. Acesso em: 4 may. 2024.