TY  - BOOK
AU  - Dunn,Andrew
TI  - Lifting by levers
SN  - 9780750202183
U1  - 372.3 DUN 
PY  - 1991///
CY  - England
PB  - wayland
KW  -  Levers
KW  - Juvenile literature
KW  - Lifting and carrying |
KW  - Levers
KW  - Simple machines
N1  - Includes bibliographical references  and index
N2  - Describes simples machines which utilize the principle of levers to move heavy objects, cut material, and make mu
ER  -