Riordan, Rick 1964- The mark of Athena : Heroes of Olympus 3 / Rick Riordan. - London : Puffin Books, 2013. - 584 papers ; 19 cm. ISBN: 9780141335766 Subjects--Topical Terms: American literature-fictionFantastic fiction Dewey Class. No.: 828.33 / RIOm 2013