PUIG MONTRAVETA, J. Quick analysis method of sulphuric anhydride. Materiales de Construcción, [S. l.], v. 24, n. 155, p. 91–103, 1974. DOI: 10.3989/mc.1974.v24.i155.1313. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1313. Acesso em: 3 may. 2024.