Its called "Panzers in the Defense of Festung Posen 1945"
and its advertised at http://theminiaturespage.com/news/?id=805157997 from where this book cover image was taken (below).

and ad notes:
"Paperback, 297mm x 210mm, 96 pages, 16 color photos, 61 black-and-white photos, 11 black-and-white maps, 8 tables"
Published by Helion who are currently offering it for £17.96p (plus P&P I presume) their usual price is £19.95p.
see https://www.helion.co.uk/panzers-in-the ... -1945.html
CarlL