"Amanda Earl and Danielle Sensier; [illustrated by P. Bull]" <br/><br/>
Digging machines 

 -  Hove, England : Wayland, 1994.  1994 
 - 32 
<br/><br/><label>ISBN: </label>0750212780 
<br/><br/><label>Dewey Class. No.: </label>629.23  / 3140