TY  - BOOK
AU  - Lennon,Liz
TI  - Pulleys
T2  - Simple technology 
SN  - 9781526323545
U1  - J 621.811 GLO 22
PY  - 1997///
CY  - Crystal Lake, IL : 
PB  - Rigby Interactive Library
KW  -  Simple machines -- Juvenile literature
N1  - includes glossary and index
ER  -