Hello, to express my anger about the quality of the book. The book is a bad bill with a rough cutting. Return the book cost me more than to buy it, I feel the least harm on my purchase. Hatier wronged by Amazon that provides a non-compliant book, injured by Amazon sent me an improper book. Regular buyer at Amazon, I think back to the physical world in which I myself could control the quality of products. You'll notice in the picture the absence of page numbers, to play the game of guessing later.