Collins, Suzanne. <br/><br/>
Gregor and the marks of secret 
Suzanne Collins 
 - 1st ed. 
 - [S.l.]  Scholastic Press  2006 
 - 343 p. 
 - Underland chronicles ; .
 - Underland chronicles ; .
<br/><br/><label>ISBN: </label>9781407137063