MAGALLÓN-ROSA, R. The forbidden opinion polls of the Spanish Transition. Access to public information and Digital History. Culture & History Digital Journal, [S. l.], v. 7, n. 2, p. e019, 2018. DOI: 10.3989/chdj.2018.019. Disponível em: https://cultureandhistory.revistas.csic.es/index.php/cultureandhistory/article/view/147. Acesso em: 1 may. 2024.