The product is a collection of two Dan Brown books, specifically "The Da Vinci Code" in paperback format and "The Lost Symbol" in hardback. Both books are in English and are part of the fiction narrative genre, aimed at an adult audience. The novels feature the symbologist Robert Langdon as the protagonist and explore themes of secret societies, art, religion, and history. With gripping plots and fast-paced storytelling, these books are a captivating read for fans of suspense and adventure.
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