This book is a bit of an odd one...written by Klaus-Peter König and Martin Hugo in 1987, it is a translation from German or a book intended for the German sport shooting market. It attempts to be a catalog of 9mm Parabellum pistols, but this is impossible because of the number of new designs that have come onto the market since it was published. The section on historical pistols is reasonably complete (although clearly biased towards German designs). The sections on modern sporting pistols, subcompact pistols, 9mm revolvers, and 9mm carbines are particularly odd-looking to today's reader (the only two carbines included, for example, are the semiauto Uzi and the Marlin Camp Carbine).

I was excited by the book's scope when I first got it because it does include a number of now-obscure pistols from the 1980s, like the Bernardelli P018 and Dreyse 9mm. Unfortunately, most of the text is devoted to essentially the same material one would find in owners' manuals for the various pistols. It is heavily oriented toward explaining the operation and construction of the guns, and not their history, development, or use. A few of the pistols (like the Luger and P38) do have more detailed historical explanations, but these sections are still inferior to readily available online sources today like Wikipedia.

I would not recommend this book unless there is a very specific reason a person wants it. In general, I think Edward Ezell's "Handguns of the World" does a much better job covering the same material, albeit without the post-WW2 pistols. For those who do want a copy of König and Hugo's work, it is available from Schiffer for $40:
https://schifferbooks.com/products/9mm-parabellumpistols

It can also be found on Amazon for a bit less, at least at the time of this filming:
https://amzn.to/36MDFSD