@book{UBHD-3516913, title={The Middle Ages}, edition={1. publ.}, publisher={Cambridge Univ. Pr.}, address={Cambridge}, year={1988}, pages={XI, 302 S.}, language={eng}, isbn={0-521-30975-1 and 978-0-521-30975-2}, library={UB [Signatur: 88 A 12649::2 (1)] ; UB}, }