The book is written in the Greek language  
 Απ' το Μεσαίωνα
στο Μεσαίωνα
For more information about its presentation and some excerpts (in Greek language):
Go to the Greek Home page                            and then 
navigate to  Παρουσίαση βιβλίου   (Book presentation) for the 
specific book       
ISBN 978-960-93-8320-1-8
 From the Middle Ages
to the Middle Ages
292 Pages Α5
Available in PDF and EPUB format on websites :
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The book, in electronic form, is also available (free of charge) by the author. You can order it from the "CONTACT" page following simple instructions.