Here is the list of contents:
Definition of a buckler   
History of the buckler   
Typology of the buckler   
Bucklers and their usage
The construction of bucklers
Carrying the buckler
Catalogue of original bucklers
Exkurs Benennung des Bucklers im deutschen Sprachraum
The book has 268 pages and is available from bookstores, amazon and of course from Wyvern Media, the publisher. (Although Amazon might be a bit slow with updating the data…its a strange place).
I hope I could contribute a bit to our fascinating field of study.
Thank you a lot and best wishes
Herbert

