ISBN: 0822522179

Description: 48 pages : color illustrations ; 23 cm.

Notes: Includes bibliographical references (page 46) and index.

LCCN: 00012119

Control Number: 512268

Series:

• Early bird physics books
• Walker, Sally M. Early bird physics books.

Subjects: Work (Mechanics) -- Juvenile literature.

Other Authors:

• Feldman, Roseann.
• Feldmann, Roseann.