There has been data (": Key Figures in Medieval Europe (2006): An Encyclopedia (Routledge Revivals: Routledge Encyclopedias of the Middle Ages) - ISBN-13 978-1-351-68167-4") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Tue Dec 31 14:49:35 2019, so the data displayed here has been removed .