Walliams, David, 1971- Grandpa's great escape / David Walliams. - 460 pages ; 23 cm. ISBN: 9780007494019 (hbk.) £12.99 9780008135195 (tpb) No price Nat. Bib. No.: GBB587503 bnb Index Terms--Genre/Form: Children's stories.Humorous stories. Dewey Class. No.: F WAL/O