Healy, Kent T. <br/><br/>
The economics of transportation in America. 

 - New York:  The Ronald press company;  [c1940] 
 - xviii, 575 p:  illus. (incl. maps) diagrs;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads--United States.<br/>Transportation--United States.
<br/><br/><label>LC Class. No.: </label>HE203  / .H4