Kerr Arnold D Ed. <br/><br/>
Productivity in US railroads. 

 - New York     Pergaman Press       1980 
 - viii,143p  cm. 
<br/><br/><label>Standard No.: </label>36648 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X415.73'N7, M0