Plowden, David. <br/><br/>
Bridges :  the spans of North America / 
David Plowden. 
 - New York :  W.W. Norton & Co.,  1974. 
 - 328 p. :  ill. ;  27 cm. 
<br/><br/><label>ISBN: </label>0393019365 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bridges--North America.