Usselman, Steven W., <br/><br/>
Regulating railroad innovation :  business, technology, and politics in America, 1840-1920 / 
Steven W. Usselman 
 - xv, 398 páginas :  ilustraciones 
<br/><br/><label>ISBN: </label>0521806364 0521001064 (rustica) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferrocarriles--Historia--Estados Unidos<br/>Ferrocarriles--Innovaciones tecnologicas
<br/><br/><label>LC Class. No.: </label>TF23  / U77 
<br/><br/><label>Dewey Class. No.: </label>385/.0973/09034