Hay, William Walter. <br/><br/>
An introduction to transportation engineering / 
William Walter Hay. 
 - New York :  Wiley,  1961. 
 - 505 p. :  ill. 
<br/><br/>Includes bibliography. 
<br/><br/><label>LCCN: </label>61005671  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation.