Hay, William Walter,   1908- <br/><br/>
An introduction to transportation engineering / 
William Walter Ha y. 
 - New York :  Wiley,  1961. 
 - 505 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation.
<br/><br/><label>Dewey Class. No.: </label>385.012