Wightman, W. D. <br/><br/>
Special study of pre cast concrete tunnel liner demonstration :  lexington market tunnels Baltimore, Meryland / 
W.D. Wightman, S.J. Calabrese and E.L. Forster 
 - Washington, D.C. :  U.S. Government Printing Office,  1981 
 - vii, 249 p. ;  26 cm. 
<br/><br/> Final report ; Urban mass transport administration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bridges<br/>Tunnels
<br/><br/><label>Dewey Class. No.: </label>629.2