Ulzar Sadosh’s Reviews > Rosyjskie fortyfikacje ladowe > Status Update

Finished the part about construction and combat effectiveness, it had plans of many fortification types and a few combat examples.
Now I'm reading a part about details of construction.
Finally learned what the thing on the lower part of the cover is. It's a concrete mixer complex.
I have about 127 pages left, so I'm over 2/3 into the book.