The Tunnel Builders,

by James E. Kelly

Explains the many techniques used at various stages of building tunnels under streets and rivers or through mountains. This description may be from another edition of this product.

• Format: Hardcover
• Language: English
• ISBN: 0201037211
• ISBN13: 9780201037210
• Release Date: January 1976
• Publisher: Addison Wesley Publishing Company
• Length: 48 Pages
• Weight: 0.85 lbs.
• Age Range: 5 to 8 years
• Grade Range: Kindergarten to Grade 3