Riordan, Rick The Maze of bones / Rick Riordan. - New York : Scholastic, 2008. - 220 p.: 19 cm. - The 39 clues; bk.1 . English ISBN: 978-0-545-24365-0 Subjects--Topical Terms: Family secrets--Juvenile fiction LC Class. No.: R47m bk.1 2010