LADEWIG PETERSEN, E. Irving A. Agus: Urban Civilization in Pre-Crusade Europe. A Study of Organized Town-Life in Northwestern Europe during the Tenth and Eleventh Centuries basedon the Responsa Literature. Vols. I—II. Leiden, E. J. Brill, 1965. xii + 420 s., vi + 401 s. 54 fl. Historisk Tidsskrift, [S. l.], v. 12, 1967. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/50731. Acesso em: 6 maj. 2024.