If you're lucky, you may find the Albedo Diagram early in the game inside one of the chests around White Orchard’s battlefield, since several players have reported that they were able to find it there. According to the books, many of the villages where the Witchers are seen are opposed https://arthurbkxrm.blogdigy.com/notas-detalhadas-sobre-the-witcher-3-wild-hunt-56398832