Willems, Mo, That is NOT a good idea! / Title appears on resource as: Mo Willems presents That is NOT a good idea! Mo Willems. - London : Walker, 2013. - 41 unnumbered pages : chiefly illustrations (colour) ; 25 cm Formerly CIP. ISBN: 9781406349412 (hbk.) : £11.99 Nat. Bib. No.: GBB357514 bnb Nat. Bib. Agency Control No.: 016443906 Uk Dewey Class. No.: 813.6