2009 L'Aquila earthquake region saw dozens of significant aftershocks following the main earthquake. The strongest, which hit at 19:47 CEST on 7 April, measured magnitude 5.3 and caused further damage. According to the Italian National Geophysics Institute director Boschi, the aftershock epicentres migrated south-east, thus lessening the risk of further major shocks near populated areas. Aftershocks caused safety problems for rescue crews searching for injured victims trapped in precarious structures in the historic center of L'Aquila, a medieval city. Using cranes and backhoes to remove loose bricks and broken timbers, the crews were aware that even a small aftershock could have triggered the
The Book of the City of Ladies Vignay's "Miroir historical" (1333). This text is the French translation of the historical portions of "Speculum Maius", an encyclopedia by Vincent of Beauvais that was begun after 1240. "The Book of the City of Ladies" is an allegorical society in which the word "lady" is defined as a woman of noble spirit, instead of noble birth. The book, and therefore the city, contains women of past eras, ranging from pagans to ancient Jews to medieval Christian saints. The book includes discussion between Christine de Pizan and the three female Virtues which are sent to aid Christine build the city. These