It's possible you're thinking of:
* A fictional book: Many fantasy books and stories feature magic and wizards, and there could be a book within the story that you're thinking of.
* A real book about magic: There are real books about the history, practice, and philosophy of magic, but they are usually called books on "magic", "witchcraft", "sorcery", or other similar terms.
Could you provide more context or information about the book you're looking for?