All Books in This Series

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Title: The Hidden Oracle (The Trials of Apollo Series #1), Author: Rick Riordan
Title: The Dark Prophecy (The Trials of Apollo Series #2), Author: Rick Riordan
Title: Camp Jupiter Classified: A Probatio's Journal: An Official Rick Riordan Companion Book (Trials of Apollo Series), Author: Rick Riordan
Title: From Percy Jackson: Camp Half-Blood Confidential: Your Real Guide to the Demigod Training Camp (Trials of Apollo Series), Author: Rick Riordan
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Title: The Burning Maze (The Trials of Apollo Series #3), Author: Rick Riordan
Title: The Tower of Nero (The Trials of Apollo Series #5), Author: Rick Riordan