The builders :  marvels of engineering / 
[editor Elizabeth L. Newhouse] 
 - Washington, D.C. :  National Geographic Society,  1992. 
 - 288 p. :  ill. (some col). ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering--History.