https://bigcat.pt/loja/barbarossa-vi...he-east-front/
Looks like a reprint of this 2001 title of 144 pages split into two volumes.
Exact same author.
MMP's website lists the page length of the new volumes as 80pp (V1) and 90pp (V2) so maybe some updates, new content.
Or just formatting change.
To explain the different page count total.