AU  - ROYSTON,ANGELA
TI  - RAMPS AND WEDGES
T2  - HOW IT WORKS
SN  - 0431017476
U1  - 621.811/ROY 
PY  - 2000///
CY  - OXFORD
PB  - HEINEMANN LIBRARY
KW  - INCLINED PLANES
KW  - JUVENILE LITERATURE
ER  -