Again... Small minus here, I won't penalize it much in the ratings, because I think it's a files issues and not a overall quality issues of the true physical or even true digital book. The illustrations look very bad, full of pixels and blurry. But recently I've been contact with some publisher, after bad reviews, saying that NG limited the file size, so they have to downgrade the quality of there digital files in order to fit in. If so, well NG should try to improve that because it provides a «sample» that isn't truly accurate and so it's hard to give a fair review on a downgraded product... I would be curious to see the real edition of this book, because it look like it could be spectacular!

If not, a very nice encyclopedia, true to the DK standard quality. Lot of info, visually well presented, well organized as well, illustrations looks promising and just a massive book. Good job!