Askew, Amanda. <br/><br/>
Diggers 
Amanda Askew 
 - ed. 
 - [S.l.]  Firefly Books  2010 
 - 24 p. 
 - Mighty machines .
 - Mighty machines .
<br/><br/><label>ISBN: </label>9780329788193 (Follett bdg.) 9781554077052 (pbk.)