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Rick Riordan
The Heroes of Olympus (4)
The Red Pyramid
The Kane Chronicles (1)
The Burning Maze
The Trials of Apollo (3)
The House of Hades
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The Son of Neptune
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How to Train Your Dragon
Cressida Cowell
How to Train Your Dragon (1)
How to Speak Dragonese
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How to Cheat a Dragon's Curse
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