. "PZ7.R4829 Los 2010" . . . . "978-1-4231-1339-3" . . "The Lost Hero"@en . "526057827" . . . "553"^^ . . . "The Lost Hero is a 2010 fantasy-adventure novel written by Rick Riordan and is based on Greek and Roman mythology. It is the first book in the series The Heroes of Olympus, the second series about demigods and Camp Half-Blood."@en . . "2010-10-12Z"^^ . .