CALLEJA, J. 40th anniversary: II I.E.T.c.c. General Assembly. Materiales de Construcción, [S. l.], v. 24, n. 155, p. 21–48, 1974. DOI: 10.3989/mc.1974.v24.i155.1309. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1309. Acesso em: 27 apr. 2024.