Lang, A. Scheffer. <br/><br/>
Urban rail transit :   its economics and technology /  
A. Scheffe r Lang, Richard M. Soberman. 
 - Cambridge :   The Masschusetts Institute of Technology Press,   19 64. 
 - xii, 139 p. :    ill. ;    25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads --Urban areas.------
<br/><br/><label>Dewey Class. No.: </label>388.42 LAN