Seesaws, Nutcrackers, Brooms
Subtitle: Simple Machines That Are Really Levers
Publisher: Bt Bound
Published: March 2001
Language: eng
Format: Library Binding
ISBN-13: 9780785743378
Subjects: Technology - Machinery; Juvenile Nonfiction; Juvenile literature; Levers; Machinery; Simple machines; Children: Grades 4-6