Collins, Suzanne. <br/><br/>
Gregor and the Code of Claw 
Suzanne Collins 
 - 1st ed. 
 - [S.l.]  Scholastic Press  2007 
 - 412 p. 
 - Collins, Suzanne. Underland chronicles .
 - Collins, Suzanne. Underland chronicles .
<br/><br/><label>ISBN: </label>9781407137070