Public transportation security. volume 5: security-related -customer communications and training for public transportat-ion providers / John N. Balog...[et al.] 

 - Washington, D.C. : TRB 
 - [6]p. 
 - Transit cooperative research program report ; 86 / Transpor-tation Research Board .
<br/><br/> [Este folleto incluye 1CD.]