Speak up, Edie!

By Johanna Johnston

The world's greatest inventors share the secrets of their inventions.* Follow the inventing process step by step.* Read about the races to invent the lightbulb, telephone, and airplane.* Find out who invented the World Wide Web.You decide who was the greatest inventor of all time!

• Format: Hardcover
• Language: English
• ISBN: 0399203745
• ISBN13: 9780399203749
• Release Date: January 1974
• Publisher: Putnam
• Length: 45 Pages
• Weight: 0.65 lbs.