Suhr, Mandy.
Pulleys / Mandy Suhr ; illustrated by Mike Gordon. - Hove : Wayland, 1996. - 32 p. : ill. ; 21 cm. - Simple technology .
Bibliography. Includes index.
0750218665
GB 96-Y9735
Pulleys--Juvenile literature.
Power transmission--Juvenile literature.
621.85
Pulleys / Mandy Suhr ; illustrated by Mike Gordon. - Hove : Wayland, 1996. - 32 p. : ill. ; 21 cm. - Simple technology .
Bibliography. Includes index.
0750218665
GB 96-Y9735
Pulleys--Juvenile literature.
Power transmission--Juvenile literature.
621.85