Vogel, Robert M <br/><br/>
Roebling's delaware & Hudson canal aqueducts 

 - Washington:   Smithsonian Institution Press,   1971 
 - 45p. 
 - Smithsonian studies in history and technology   10 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>628.14   / L1