ISBN 1279625899 books & textbook
Constantini Porphyrogeniti Imperatoris De Cerimoniis Aulae Byzantinae Libri Duo: Graece Et Latine, Volume 11... (Latin Edition)
Bekker, Immanuel Constantine VII Porphyrogenitus (Emperor Johann Jacob Reiske
Nabu Press /2012-04-07 Paperback / 624 Pages
isbn-10: 1279625899 / isbn-13: 9781279625897
