Norton Hugh S. <br/><br/>
Modern transportation economics 

 - 2nd 
 - Ohio  Charles E. Merrill          1971 
 - viii, 470p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transport Economics
<br/><br/><label>Dewey Class. No.: </label>X4, K3; L1