Llewellyn, Nathaniel Edwards <br/><br/>
A record of history and evolution of early american bridges 

 - Orono, Marine :   University press,   1959 
 - xii, 204 p. :   fotos ;   23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AMERICA<br/>HISTORIA DE LA TECNOLOGIA<br/>HISTORIA<br/>PUENTES
<br/><br/><label>Universal Decimal Class. No.: </label>624.2/.8