01213cam a2200313 4500 482048799 TxAuBib 20210101120000.0 910520s1992||||||||||||||||||||||||eng|u 91050547 9780836807691 0836807693 DLC DLC DLC TxAuBib Williams, John, 1950 March 5- Machines. Projects with machines / by John Williams ; illustrated by Malcolm S. Walker. North American ed. Milwaukee : Gareth Stevens Children's Books, 1992. 32 p. : col. ill. ; 27 cm. Simple science projects Originally published as: Machines. Great Britain : Wayland, c1991. Includes bibliographical references (p. 29) and index. Provides instructions for making and using a variety of machines, including levers, diggers, cranes, and pulleys. 20210101. Machinery Experiments Juvenile literature. Machinery Experiments. Experiments. Walker, Malcolm S., ill. Simple science projects.