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Which series is better Percy Jackson or Heroes of Olympus : camphalfblood | Percy jackson books, Percy jackson, Percy jackson characters
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Amazon | Heroes of Olympus, Book One The Lost Hero: The Graphic Novel ( Heroes of Olympus, Book One) (The Heroes of Olympus, 1) | Riordan, Rick, Venditti, Robert, Powell, Nathan | Greek & Roman
![Amazon | The Heroes of Olympus Paperback Boxed Set (10th Anniversary Edition) | Riordan, Rick | Greek & Roman Amazon | The Heroes of Olympus Paperback Boxed Set (10th Anniversary Edition) | Riordan, Rick | Greek & Roman](https://m.media-amazon.com/images/I/81we0MhMJYL.jpg)