What Are Levers? (Looking at Simple Machines)
Publisher: Capstone Press
Published: August 2001
Language: eng
Format: Paperback
Number of pages: 24
ISBN-13: 9780736891370
Subjects: Juvenile Nonfiction; Children's Books/Ages 9-12 Nonfiction; Children: Grades 1-2; General; Technology - How Things Work/Are Made