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Border technology : keeping terrorists out of the United States : hearing before the Subcommittee on

United States. Congress. Senate. Committee on the Judiciary. Subcommittee on Terrorism, Technology, and Homeland Security.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2003. 2003

How can technologies help secure our borders? : hearing before the Committee on Science, House of Re

United States. Congress. House. Committee on Science.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2006. 2006

Strengthening border security between the ports of entry : the use of technology to protect the bord

United States. Congress. Senate. Committee on the Judiciary. Subcommittee on Immigration, Border Security, and Citizenship.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2006. 2006