Keeper of the Lost Cities x 8 box set Paperback / softback Main Details Title Keeper of the Lost Cities x 8 box set Authors and Contributors      By (author) Shannon Messenger Physical Properties Format:Paperback / softback Pages:320 Dimensions(mm): Height 198,Width 130 ISBN/Barcode 9781398507821 Audience Children / Juvenile Edition ANZ Only Publishing Details Publisher Simon & Schuster Ltd Imprint Simon & Schuster Childrens Books Publication Date 30 April 2021 Publication Country United Kingdom