HTTYD Slipcase 1-12 Paperback / softback Main Details Title HTTYD Slipcase 1-12 Authors and Contributors      By (author) Cressida Cowell Physical Properties Format:Paperback / softback Dimensions(mm): Height 255,Width 215 ISBN/Barcode 9781444965278 Audience Children's (6-12) Publishing Details Publisher Hachette Children's Group Imprint Hodder Children's Books Publication Date 26 October 2021 Publication Country United Kingdom