MacDonald, Alan, 1958- Crackers! / Alan MacDonald ; illustrated by David Roberts. - London : Stripes, 2008. - 94 p. : ill. ; 20 cm. - Dirty Bertie . Formerly CIP. ISBN: 9781847150486 Nat. Bib. No.: GBA897306 bnb Nat. Bib. Agency Control No.: 014686869 Uk Index Terms--Genre/Form: Christmas stories. Dewey Class. No.: 823.914