Starr, John T <br/><br/>
The evolution of the unit train, 1960-1969. 

 - Chicago :  University of Chicago, Dept. of Geography,  1976 
<br/><br/>Bibliography, p. 215-233 
<br/><br/><label>ISBN: </label>0890650659 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads--Freight--United States<br/>Railroads--Train load