Data retention as a tool for investigating Internet child pornography and other Internet crimes : hearing before the Subcommittee on Crime, Terrorism, and Homeland Security of the Committee on the Judiciary, House of Representatives, One Hundred Twelfth Congress, first session, January 25, 2011.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2011.
