Problem Print Darkness

This book is definitely worth a read, but I see a lack of comfort from reading that the entire main text, apart from what is accentuated or in cartridges has insufficient contrast to the color of the ink small characters. This book was given to me by my son, I did not want to be unpleasant but frankly I unfortunately know what to do so much reading is tiring. Conclusion I recommend this book to all those who have sight problems, I'm sorry this book is of obvious interest but marred by a lack of demand from people responsible for control at the printer or at the reception publisher. I hope this review will be read by a manager and a correction will be made. A small communication card provided for this purpose inside the book has not pressed unnecessary to make any returns to where it should. If you correct or delete this text. Thank you