00487nam a22001577a 4500 220607b xxu||||| |||| 00| 0 eng d 9781575720845 22 J 621.811 GLO Glover, David. Pulleys and gears/ by David Glover Crystal Lake, IL : Rigby Interactive Library, ©1997. 24p.: col. ill; includes glossary and index Simple machines -- Juvenile literature. ddc BK 33255 33255 0 0 ddc 0 0 NFIC NB NB CHILD 2022-06-07 Book Aid International 6000.00 J 621.811 GLO 0071835 2023-04-20 00:00:00 9000.00 2022-06-07 BK