The tunnel builders /

Explains the many techniques used at various stages of building tunnels under streets and rivers or through mountains.

Bibliographic Details

Main Author:	Kelly, James E.
Other Authors:	Park, William R., Lake, Herbert E.
Format:	Book
Language:	English
Published:	Reading, Mass. : Addison-Wesley, [1976]
Subjects:	Tunnels > Juvenile literature. Tunneling > Juvenile literature. Tunnels. Tunneling.