00945nam 2200169z- 450 9910712413403321(CKB)5470000002494012(EXLCZ)99547000000249401220230509c2019uuuu -u- -engSurface transportation security : addressing current and emerging threats : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, UniteU.S. Government Publishing OfficeWashingtonSurface transportation security BOOK9910712413403321Surface transportation security : addressing current and emerging threats : hearing before the Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security of the Committee on Commerce, Science, and Transportation, Unite3275374UNINA