The degree of detail such specialist publications go into is extraordinary. It's amazing how much interest in WWII there is, and how almost every nut and bolt of every individual Panzer can be traced and accounted for. Truly astonishing! The amount of resources available to us enthusiasts is terrific. And if this example is typical of Dennis Oliver's contributions to the field, he's a top drawer contributor to this embarrassment of riches.
In addition to what I've already mentioned, there are all sorts of other aspects covered here: maps, timelines, individual unit organisations and histories, and so on. For a publication the size of a typical A4 glossy magazine, there's a massive amount of extremely interesting and useful info here. Very impressive! Oh dear... now I want more!
I do happen to have a recently acquired Zvezda snap-fit Tiger II. I'm planning to build it as this:
 Interestingly almost all the photographs are of knocked out or abandoned Tigers, mostly taken by Allied photographers. This superb picture is quite heavily cropped in the book, to focus on the tank, rather than the rather picturesque setting.
 Most the models appear to be 1/35. The info on models, accessories and so on is superb, and very useful.