Transportation research board  [electronic resource]. 
 Transportation research record  [electronic resource]. 

 - Washington:  Transportation Research Board National Research Council,  1974-. 
 - 2 computer optical discs :  digital ;  4 3/4 in. 
<br/><br/> no. 1609-1651(1998) and no. 1652-1695(1999) in CD-ROM formats. 
 = Transportation research board 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation--Research--Periodicals.