Korman, Justine. <br/><br/>
Working hard with the Mighty Dump Truck / 
written by Justine Korman ; illustrated by Steven James Petruccio. 
 - New York :  Scholastic,  c1993. 
 - 1 v. (unpaged) :  col. ill. ;  20 cm. 
<br/><br/> At head of title: Tonka. 
<br/><br/><label>ISBN: </label>0590464817 (pbk.) :  $2.50 
<br/><br/><label>LCCN: </label>92061192  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dump trucks--Juvenile literature.<br/>Earthwork--Juvenile literature.<br/>Metal toys--Juvenile literature.<br/>Dump trucks.<br/>Trucks.
<br/><br/><label>LC Class. No.: </label>TL230.15  / .K67 1993 
<br/><br/><label>Dewey Class. No.: </label>629.224