Dunn, Andrew <br/><br/>
Tunnels 

 - London  Wayland  1990 
 - 32 
 - Structures .
<br/><br/> Explains tunnel-building methods, looks at various types of tunnels and discusses their uses. 
<br/><br/><label>ISBN: </label>9780750204941 
<br/><br/><label>Dewey Class. No.: </label>629.23  / DUN