AU  - ROYSTON,ANGELA
TI  - PULLEYS AND GEARS
T2  - HOW IT WORKS
SN  - 0431017433
U1  - 621.83/ROY 
PY  - 2000///
CY  - OXFORD
PB  - HEINEMANN LIBRARY
KW  - PULLEYS
KW  - GEARING
KW  - JUVENILE LITERATURE
ER  -