Pilkey, Dav,  1966- <br/><br/>
Captain Underpants and the revolting revenge of the radioactive robo-boxers :  the tenth epic novel / 
 Captain Underpants & the revolting revenge of the radioactive robo-boxers 
by Dav Pilkey. 
 - 216 pages :  illustrations ;  22 cm. 
<br/><br/> George and Harold are forced to contemplate a world without Captain Underpants. 
<br/><br/><label>ISBN: </label>9780545175364 
<br/><br/><label>LCCN: </label>2012944030 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Captain Underpants (Fictitious character)--Juvenile fiction.<br/>Superheroes--Juvenile fiction.<br/>Time travel--Juvenile fiction.<br/>Humorous stories.<br/>Captain Underpants (Fictitious character)--Fiction.<br/>Time travel--Fiction.<br/>Heroes--Fiction.<br/>Humorous stories.