While this book is a great resource for scholarly articles and a comprehensive catalogue of mucha's artwork, it has some major flaws that make me like it a lot less than I should.
The first is how the layout is done. Text only appears in large blocks, which limits the arrangement (and therefore the size in many cases) of the illustrations. This is most likely a cause of printer limits in regards to layout, but it is unfortunate how small some pictures are as a result. The "Slav Epic," especially requires a large reproduction for readers to appreciate the amount of detail in each picture (the actual canvases are HUGE), but the reproductions here are so small that the images are largely lost.
Secondly, the pieces are not presented chronologically, so any researcher wanting to study the evolution of Mucha's style is hindered by having to flip pages constantly. Studying Mucha's "phases" is virutally impossible this way as well, since photographs appear in random places throughout the book, even though he did not start using them until much later in his career, so the reader is presented with a falsified timeline.
The last (and most important) problem is the colour. Many times only black ink is used, and I found many of the pictures in colour to have erronious tone! Mucha's art may be distinct because of it's line style, but art is effected greatly by colour, so the reader will be extremely underwhelmed by Mucha's creations in this form.