Directory of tunnels in India  research scheme applied to river vally projects 

 - New Delhi  Central Board of Orrigation & power  1988 
 - iii,257 p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Tunnels
<br/><br/><label>Dewey Class. No.: </label>624.19  / C27D