TY  - BOOK
AU  - Johnson,Ryerson
AU  - Baum,Willi
TI  - Monsters that move earth
SN  - 0701522054
AV  - PZ10.J573 
U1  - 624.152 
PY  - 1974///
CY  - Massauchusetts : 
PB  - Ginn and Company , 
KW  - Earthmoving machinery
KW  - Juvenile literature
N1  - H
; 430
; Lexile estimate
; H
; Raz-Plus

N2  - Introduces bulldozers, power shovels, ditch diggers, and other massive earthmoving machines
ER  -