Johnson, Emory R. <br/><br/>
Principles of railroad transportation. 

 - New York :  D. Appleton,  1924. 
 - 617 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ESTADO<br/>ESTADOS UNIDOS<br/>FERROCARRILES<br/>TRANSPORTE
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>HISTORIA