PATEL, O. . A discussion of variables involved in cement concrete mixtures. Materiales de Construcción, [S. l.], n. 016, p. 71–71, 1950. DOI: 10.3989/mc.1950.i016.3161. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/3161. Acesso em: 28 apr. 2024.