@book{UBHD-1513873, author={Watterson, Helen Manner}, title={Romanesque architectural sculpture in Viterbo, 1180 - 1220}, address={Ann Arbor, Mich. [usw.]}, year={19XX-}, language={eng}, school={New Haven, Conn., Yale Univ., Diss., 1977}, library={UB [Signatur: 81 A 5331]}, }