When Leonard starts attending Superhero School he is disappointed to find that all they learn is math, but when the ice zombies strike, Leonard and his classmates put their newly-acquired knowledge to good use.
9781599903460 (reinforced edition)
1599903466 (reinforced edition)
1st U.S. ed.
New York : Bloomsbury, 2009.
1 v. (unpaged) : col. ill. ; 29 cm.