Johnson, Emory R. <br/><br/>
Transportation economic principles and practices 

 - New York  Appleton-Century-Crofts    1947 
 - 409 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Transportation<br/>  Railroad, economic aspects
<br/><br/><label>Dewey Class. No.: </label>385  / J630t 1947