TY - BOOK ID - 5212095 TI - Tibaldo and the hole in the calendar AU - Shimony, Abner AU - Shimony, Jonathan PY - 1998 SN - 0387949356 PB - New York (N.Y.): Copernicus DB - UniCat KW - Astronomy KW - Calendar, Gregorian KW - History KW - Fiction. KW - Gregory KW - Bologna (Italy) KW - Gregorian calendar KW - Physical sciences KW - Space sciences KW - History&delete& KW - Fiction KW - Boncompagni, Ugo, KW - Gregorio KW - Gregorius KW - Bononia (Italy) KW - Bologne (Italy) KW - Bolonia (Italy) KW - Bononia Pinguis (Italy) KW - Felsina (Italy) KW - Grégoire UR - https://www.unicat.be/uniCat?func=search&query=sysid:5212095 AB - ER -